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it can be seen that tongue roll is not a genetically inheriting trait. dominant and recessive allele does plays part in determining ones trait however a proven research has shown that tongue roll is plausible with adequate training. which proves its not a genetic inheritance.

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Both investigations discovered rolling children of non-rolling parents, implying that the feature is more complex than the legend suggests. The disparity could be attributable to more intricate genetics, such as many alleles or genes, or environmental factors.

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In my opinion, don't be discouraged if you are not a member of the Tongue Rolling Elite, some may train their tongue to obey. In fact, one of the McDonald's students conducted a small study asking 10 non-speaking participants to try to roll their tongue every day, and after a week of practice, one participant managed to roll the tongue.  

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In my opinion, don't be discouraged if you are not a member of the Tongue Rolling Elite, some may train their tongue to obey. In fact, one of the McDonald's students conducted a small study asking 10 non-speaking participants to try to roll their tongue every day, and after a week of practice, one participant managed to roll the tongue.  

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-AISYAH-

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This article prove me wrong about tongue rolling 'thing' as a genetic traits that my teachers taught me at school. The proof is that, that one twin can roll his tongue while the other one can't do that. However, some people especially children can't roll their tongue. This trait is not influenced by the genetic because you can learn and practice how to do it. Your age and the time taken needed for you to roll your tongue might be one of the factor for this ability to achieve
- aina

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The tongue rolling ability occurs due to the influence of a dominant allele of the gene. A person who has either one or two copies of the dominant allele will be able to twist their tongue. In the case that a person is born with two recessive alleles, they cannot twist their tongue
-Danish-

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my opinion about tongue rolling is it is not a inherited as it is influenced by both genetics and the environment. even without genetics, tongue rolling seems to be an ability that comes with practice, not something you are born with.
-irdina-

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rolling tongue is a skill that can be acquired through practicing because when i was child i can not roll my tongue but when i growing up i able to do it

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rolling tongue is a skill that can be acquired through practicing because when i was child i can not roll my tongue but when i growing up i able to do it

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tongue rolling is not genetically controlled but people learn this trait with age and experience. it can be achieved with practice
khairiah

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In my opinion, tongue rolling is not just a genetic trait because i believe it is possible if we practice. - mithra

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In my opinion, tongue rolling is not just a genetic trait because i believe it is possible if we practice. - mithra

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Rolling the tongue into a tube shape is often described as a dominant trait with simple Mendelian inheritance, and it is commonly referenced in introductory and genetic biology courses. There is little laboratory evidence supporting the hypothesis that tongue rolling is inheritable -FAIZAH DBT5C.

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I somehow believe that genetic can give a big influence in the ability of tongue rolling. However, I also believe that tongue rolling can be achieved through practicing. Maybe after all this ability depends on our own will and our mindset because I agree on the fact that everybody can do tongue rolling.

-Jescynthia Francis

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in my opinion , it is a total myth that this ability is due to inheritance.  Tongue rolling seems to be an ability that comes with practice, not something you are born with. Just like any other weird skills like raising an eyebrow or being able to move ear muscles .

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in my opinion , it is a total myth that this ability is due to inheritance.  Tongue rolling seems to be an ability that comes with practice, not something you are born with. Just like any other weird skills like raising an eyebrow or being able to move ear muscles .

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-narhmata

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Tongue rolling is an ability at where not everyone is able to roll their tongue . Although some of the scientific research said that it is a genetic ability but in another hand nowadays many has the chances to try out the tongue rolling which is quite possible . So many practices on how to roll the tongue is available now so that people who is unable to roll can try it out by practicing some methods . I think there is some other gene that is contributing to the tongue at where it is able to change the ability of tongue rolling in a person . - renushini ragu -

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The tongue rolling ability occurs due to the influence of a dominant allele of the gene. A person who has either one or two copies of the dominant allele will be able to twist their tongue. In the case that a person is born with two recessive alleles, they cannot twist their tongue. In most cases, parents with a twisting-tongue ability can give birth to non-tongue twisters, and vice versa.

- Auni -

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Tongue rolling is not just a genetic trait because more than one gene could contribute to tongue-rolling abilities. Perhaps the same genes that determine the tongue’s length or muscle tone are involved. But there isn’t a single dominant gene that’s responsible.-The tongue-rolling gene comes in two forms, one that lets you roll your tongue and another that doesn't. If you have a version of the tongue-rolling gene that lets you roll your tongue and a version that doesn't, then you can roll your tongue. 

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Tongue rolling is not just a genetic trait because more than one gene could contribute to tongue-rolling abilities. Perhaps the same genes that determine the tongue’s length or muscle tone are involved. But there isn’t a single dominant gene that’s responsible.-The tongue-rolling gene comes in two forms, one that lets you roll your tongue and another that doesn't. If you have a version of the tongue-rolling gene that lets you roll your tongue and a version that doesn't, then you can roll your tongue. 

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-safirah-

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In my view, ability tongue rolling is not affect by genetics traits but it occur due to the influence of a dominant allele of the gene. The study proven that not all identical twins have the  ability for tongue rolling. If 2 twins out of 10 twins has the ability means the twin has one or two copies of dominant allele. On the other view, the studies also has proven that if a person who don't have the ability of tongue rolling,  can able to make roll their tongue like others by having a good practice. Scientists are not saying genetics plays no role in the tongue roll. It could be that several genes might play a part in making small changes in tongue .muscles that might allow the tongue to roll. However, there is no one gene that controls the trick.

-rittigaa dbt5c-

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In my opinion, maybe there is some genetic element, but not one that is straightforward. Instead it might involve multiple genes or variants of genes. But according to some studies person who cant role their tongue  able to role their tongue by practicing it. In short, maybe the ability to role tongue can achieve by a good practice.😉
-ROHINI-

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tongue rolling is not a simple genetic character, and twin studies demonstrate that it is influenced by both genetics and the environment.
-Yong Xian-

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Both studies found rolling offspring of non-rolling parents, so the trait must be more complicated than the myth says. The discrepancy could be due to more complicated genetics, involving multiple alleles or multiple genes, or some kind of environmental influence.

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Tongue rolling is the ability to roll the lateral edges of the tongue upwards into a tube. Rolling the tongue into a tube shape is often described as a dominant trait with simple Mendelian inheritance, and it is commonly referenced in introductory and genetic biology courses. Moreover not everyone can do that. It is a dominant capability of a person. I can do so.
*Pavitra*

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Ability to role tongue it is not a genetic trait because studies proven that not all identical twins can twist or role their tongue. It due to the one of the identical twin has either one or two copies of the dominant allele that will make able to twist or role their tongue. On the other hand, studies show that a good practice also can make a person who can't role their tongue can do it within one week. Moreover, parents that can capable to role their tongue can give birth a child that does not have the capability of rolling tongue.

Tamilselvi-DBT5C

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It’s almost certainly not a genetic trait, or if it is, you inherit the capacity to be able to roll your tongue, but not necessarily the ability. Studies show that not all identical twins can roll their tongues whereas they have almost 100% identical genes. Other studies have shown that at least some people, with training and practice, can learn to roll their tongues. Whether or not it’s because they inherited the capability and simply had to learn how to use it is not known.
-FATIN-

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The tongue rolling ability occurs due to the influence of a dominant allele of the gene. A person who has either one or two copies of the dominant allele will be able to twist their tongue. In the case that a person is born with two recessive alleles, they cannot twist their tongue. In most cases, parents with a twisting-tongue ability can give birth to non-tongue twisters, and vice versa.
- UMMI-

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My thought on tongue-twisting or rolling is not a hereditary sickness or disorder, but rather a unique behaviour performed by a person utilising his tongue, which is why tongue rolling is not only a genetic attribute. People can twist in a variety of ways since the front section of the tongue is quite flexible.
- Amiliya

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The tongue rolling ability occurs due to the influence of a dominant allele of the gene. A person who has either one or two copies of the dominant allele will be able to twist their tongue. in most cases, parents with a twisting-tongue ability can give birth to non- tongue twisters and vice-versa.

Family studies clearly demonstrate that tongue rolling is not simple genetic character, and twin studies demonstrate that it is influenced by both genetics and the environment. Despite this, tongue rolling is probably the most commonly used example of a simple genetic trait in humans.

_VINISHA_

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A twin study found that identical twins were no more likely than fraternal twins to both have the same phenotype for tongue rolling. Moreover, cloverleaf tongue is the ability to fold the tongue in a certain configuration with multiple bends it is so far proved not inheritable as few people whose parents cannot do they themselves can do it. This trait has been speculated by David D.

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Tongue rolling is not considered as an inherited trait because the twin studies demonstrate that it is influenced by both genetics and the environment. Thus the ability of rolling tongue is dominant traits.

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This doesn’t mean tongue rolling has no genetic “influence,” McDonald says. More than one gene could contribute to tongue-rolling abilities. Perhaps the same genes that determine the tongue’s length or muscle tone are involved. But there isn’t a single dominant gene that’s responsible.

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The ability of rolling tongue is dominant traits.If we can roll tongue we inherited either two dominant factors which is(one from parents)or one dominant factor or one recessive factor.If we weren't able to roll our tongue,we inherited two recessive factors(one from each parent).

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Topic immortal cell
☆JAFIREP☆
Jay , Arif , Nafi

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Topic 5
Secret of X chromosomes

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Group 4- Hela cells
-Nancy
-Zee
-Yuva

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Group 3
Topic 2 Genome sequence
Jv, silvina, dhanu

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ANNA
DENISE
RIYAH
KARTHIGA

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CELL SICKLE
GROUPS VANI FRED NAYLI

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Why is biracial or fraternal twin are different from each others?

Fraternal twin happens when there two different sperms and two different eggs are inside the womb. They’re maybe twin but they are not look alike each other.

-Arif Azhad

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Althought they were conceived at the same womb,they are two seperate individuals.Each come with the their own genes,half from mother and half from father...it may cause they look and act differently..

Silvina

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The combination of alleles of a gene that an individual receives from both parents determines what biologists call the genotype for a particular trait, such as hair texture. The genotype that an individual possesses for a trait, in turn, determines the phenotype—the observable characteristics—such as whether that individual actually ends up with straight, wavy, or curly hair.
- annur

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When a biracial couple has fraternal twins, the traits that emerge in each child depend on numerous variables, including “where the parents’ ancestors are from and complex pigment genetics

zee

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Because fraternal, or dizygotic, twins are 2 separate fertilized eggs, they usually develop 2 separate amniotic sacs, placentas, and supporting structures. Identical, or monozygotic, twins may or may not share the same amniotic sac, depending on how early the single fertilized egg divides into 2.

Riyahshini Ramachandran

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Each sperm or egg cell possesses a random selection of genes from its mother or father. While not the most probable event, a sperm or egg may randomly acquire, for example, mostly alleles that confer light skin coloration or mostly alleles that confer dark skin coloration. In such cases, fraternal twins can differ from each other quite dramatically in terms of skin color or other physical characteristics.
- Anna 😘

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These non identical twins can also call Fraternal twins, are as alike as any two siblings. They may look very different. Variation among the alleles may results this.
-yuva

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This is because non identical twin are results of their blood mother fertilised two different egg. Maybe it's because of the chromosome got distracted when its in zygote phase by radioactive when the mother exposed to radioactive or uv lights... So that the non identical twin have different traits on them...

Or maybe the non identical twin which one follows dominant traits and other follows recessive which have different traits to each other.

-Nancy Zavier

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Because non identical, or dizygotic, twins are 2 separate fertilized eggs, they usually develop 2 separate amniotic sacs, placentas, and supporting structures. Identical, or monozygotic, twins may or may not share the same amniotic sac, depending on how early the single fertilized egg divides into 2.

If twins are a boy and a girl, clearly they are fraternal twins, as they do not have the same DNA. A boy has XY chromosomes and a girl has XX chromosomes. Girl-boy twins occur when one X egg is fertilized with an X sperm, and a Y sperm fertilizes the other X egg.

Denise

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Fraternal twins (from two zygotes, what we call the earliest embryo when the egg and sperm fuse).

This type of twinning occurs when more than one egg is released from the ovary at ovulation. Normally just a single egg is selected and release and both of the eggs are fertilised by different sperm. These twins are no more genetically similar than siblings born years apart.
-Karthiga

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Fraternal twins occur when two separate eggs are fertilized during pregnancy. Fraternal twins do not share the exact same DNA. In fact, they share only about half the same genes. - Jay...hidop kene chill 😉😉😝😝

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This is because the black mom may released two eggs , and it is fertilised by two different sperm from the white dad for each egg. Each sperm or egg cell possesses a random selection of genes from its mother or father. This make the biracial twin possible.

-Fred

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They arise from two separate eggs fertilized by two separate sperm. As their mom has mixed traits which is half black and half white, the black girl inherited the Dominant Allele from her mom which is black and the white girl might inherited Dominant Allele from her dad which is white.

-Jv-

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This happens because many variation alleles.dominant trait not only blacks..
Other than that, those twin  fertilised in different eggs..which means their mother produce 2 egg in same time..

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The non identical twins formed because 2eggs are fertilised by 2sperm at the same time .The white trait from the dad is combined with the white trait of the mother and the white girl is formed.The white trait from the dad and black trait from her mother combined and formed the black girl.
-Dhanusia-

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 Why is there variation between non identical twins. 

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 Why is there variation between non identical twins. 

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Non-identical twins are the result of a mother releasing two eggs at once, both of which become fertilised by different sperm resulting in two separate zygotes which develop into two children.

Like most full siblings, non-identical twins share 50% of their DNA.
- Vanisri Kumarii

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Genetics that have at the twin have a different genotype. They got from their parents that from white and mixed color skin. Others, two seperate eggs (ovum) are fertilised by two seperate sperm, resulting in fraternal will have (two cell) twins.

Nay