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The evolution of populations effect the real world in many ways. For example, populations of animals and other organisms evolve everyday. If there is something on their body that is of no use anymore eventually that body part will no longer be on the organism because it is no longer needed or used. Another example is humans starting to walk on two legs. Humans evolved from monkeys therefore at one point, we walked on four limbs. Over time humans started to only walk on their two legs which led us to where we are today walking on two legs without a second thought.

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1. What do hox genes control? - They turn on and off other genes in the head to tail development of embryos.

2. What does natural selection directly act on? - Phenotype such as an organism characteristics

3. What shape will a graph have if it represents a polygenic trait?  - Bell shaped curve

4. Describe how Darwin’s ideas about Natural Selection explain how some animals have similar appearances. - Darwins ideas about Natural Selection explains that by talking about how some animals are distantly related to common ancestors and those animals have evolved differently from each other due to having common ancestors.

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1. Embryology - The study of embryos and their development

2. Modern Synthesis - The combination of the ideas of evolution and heredity

3. Genotype - The genetic make up of an organism

4. Phenotype - The physical make up of an organism

5. Population - The amount of a species living in a specific area

6. Gene pool - the stock of different genes in an interbreeding population.

7. Molecular clock - more time that passes, the more mutations an organism has gained.

8. Genetic drift - variation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals die or do not reproduce.

9. Genetic recombination - the exchange of genetic material between different organisms which leads to production of offspring with combinations of traits that differ from those found in either parent

10. Bottleneck effect - A population bottleneck or genetic bottleneck is a sharp reduction in the size of a population due to environmental events

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Genetic drift describes random fluctuations in the numbers of gene variants in a population. Genetic drift takes place when the occurrence of variant forms of a gene, called alleles, increases and decreases by chance over time.

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https://youtu.be/lYAHx7NiF3g