6. Explain Why Evolution Often Selects Traits That Promote Genetic Diversity

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1. Explain why evolution often selects traits that promote genetic diversity.
Evolution often selects traits that promote genetic diversity because genetic diversity boosts the chances that at least some members of the population will have a combination of traits that will allow them to survive and reproduce in a changing environment. Organisms that rely on asexual reproduction have virtually identical offspring, and they are successful in a stable environment; however, conditions rarely remain constant on Earth. Therefore, evolution favors traits that promote genetic diversity because the conditions on Earth are always changing, and genetic variability provides organisms a better chance of survival than organisms that do not have genetic variability.

2. Describe a situation in which asexual
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Is it possible for a boy-girl pair of twins to be genetically identical? Why or why not?
No, it is not possible for a boy-girl pair of twins to be genetically identical. This is impossible because females have two X chromosomes, and males have one X chromosome and one Y chromosome. Therefore, a boy-girl pair of twins would be genetically different since their sex chromosomes differ.

7. List some examples of chromosomal abnormalities and explain how each relates to an error in meiosis.
Some examples of chromosomal abnormalities are extra autosomes, extra or missing sex chromosomes, deletions, duplications, inversions, and translocations. Extra autosomes and extra or missing sex chromosomes relate to errors in meiosis because they are the result of chromosomes failing to properly separate in meiosis.
Deletions, duplications, inversions, and translocations relate to an error in meiosis because they are a consequence of homologous chromosomes failing to align correctly in meiosis or result from errors when crossing over occurs. 8. Could nondisjunction occur during mitosis? Compare and contrast the likely consequence of nondisjunction in mitosis vs.

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