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What is difference between homozygous and heterozygous pair of chromosomes?

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What is difference between homozygous and heterozygous pair of chromosomes?

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homozygous means the same whereas heterozygous means different

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What is recessive and dominant genotypes?

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What is recessive and dominant genotypes?

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Recessive genotypes are the weaker forms of alleles, represented with lowercase letters while dominant genotypes are the stronger form of alleles, represented with capital letters

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What is the difference between mitosis and Meiosis?

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What is the difference between mitosis and Meiosis?

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mitosis is the process of cell production whereas meiosis is the process of gametes/sex cell productions

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Mitosis consists of one stage whereas meiosis consists of two stages. Mitosis produces diploid cells (46 chromosomes) whereas meiosis produces haploid cells (23 chromosomes). Mitosis produces two identical daughter cells whereas meiosis produces four genetically different daughter cells. Most cells in the body regularly go through mitosis, but some do so more often than others.

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How is sex linked chromosomes expressed as a genotype?

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How is sex linked chromosomes expressed as a genotype?

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What  are two differences  between Prophase 1 and prophase 2 in Meiosis

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What  are two differences  between Prophase 1 and prophase 2 in Meiosis

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What  are the three things to make up a homologous pair of chromosomes?

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What  are the three things to make up a homologous pair of chromosomes?

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sex linked diseases are passed down through families through one of the X or Y chromosomes

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Homo - Same
Logous - Structure

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- same in length
- same centromere position
- share the same genes at the same gene loci

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What is the difference between genetic and epigenetic mutation?

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What is the difference between genetic and epigenetic mutation?

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  These are the gene modification types are

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  These are the gene modification types are

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In Agouti mice the agouti gene is repressed hence the resultant phenotype seen in mice is

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In Agouti mice the agouti gene is repressed hence the resultant phenotype seen in mice is

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Gene expression refers to how often or when proteins are created from the instructions within your genes. Epigenetic changes are reversible and do not change your DNA sequence but they can change how your body reads a DNA sequence.

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DNA needs to replicate  before cell division because DNA cannot _________   ____  ___________.

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DNA needs to replicate  before cell division because DNA cannot _________   ____  ___________.

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RNA  is located at the _________ in the cell

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RNA  is located at the _________ in the cell

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Thin brown mice

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nucleus and the cytoplasm

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Determine  the  ratio of tall to short pea plants

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Determine  the  ratio of tall to short pea plants

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prophase I involves the separation of homologous chromosomes while prophase II involves the separation of sister chromatids

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The result of DNA  modification by adding a hydrocarbon results in gene amplification or repression?

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The result of DNA  modification by adding a hydrocarbon results in gene amplification or repression?

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RNA is found mainly in the cytoplasm. However, it is synthesized in the nucleus where the DNA undergoes transcription to produce messenger RNA.

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RNA is found mainly in the cytoplasm. However, it is synthesized in the nucleus where the DNA undergoes transcription to produce messenger RNA.

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repression

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3:1
(75% are tall, 25% are short)

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Histone modification by adding a methyl group to the DNA back bone- amino acid determines if a gene will be expressed or not? True or false

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Histone modification by adding a methyl group to the DNA back bone- amino acid determines if a gene will be expressed or not? True or false

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The two steps in protein synthesis a are

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The two steps in protein synthesis a are

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Chromosomes have tightly packed DNA  called _____________________

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Chromosomes have tightly packed DNA  called _____________________

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The two steps of protien synthesis is Transcription and Translation 

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The two steps of protien synthesis is Transcription and Translation 

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Phenotypes of any organism is not completely dependent on  the genotype.( true or False)

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Phenotypes of any organism is not completely dependent on  the genotype.( true or False)

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true

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Phenotypes are the expressions of ____________.

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Phenotypes are the expressions of ____________.

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 The two type of epigenetic modifications are

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 The two type of epigenetic modifications are

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Methylation of DNA: Prevents cell from being used - DNA is more tightly coiled around Histone reducing transcription
Acetylation of DNA: DNA is less tightly coiled increasing transcription

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how much a phenotype is expressed to how much it should be

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phenotype

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Epigentics is the study of changes in------------------

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Epigentics is the study of changes in------------------

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The daughter cells as a result of meiosis are________(diploid/ haploid)

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The daughter cells as a result of meiosis are________(diploid/ haploid)

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genes

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Independent assortment happens in the _____ stage of meiosis

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Independent assortment happens in the _____ stage of meiosis

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metaphase 1

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Crossing over: Exchange of DNA from homologous chromosomes - one from each parent

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- Crossing Over
- Independent Assortment
- Random Fertilisation
- Mutations

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chromosomes

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heritable phenotype changes that do not involve alterations in the DNA nucleotide sequence.

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Gonads are the organs that produce
gametes from germline cells. In humans these are the testes (male) and ovaries (female).

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sex cells

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1 gene codes for 1 chain of amino acids (polypeptide)

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1 gene codes for 1 chain of amino acids (polypeptide)

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genome is the complete set of DNA in an organism

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1 gene codes for 1 specific trait

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refers to all the genetic information in a cell