Explain why it is that recessive alleles found on autosomes are expressed equally by both males and females and why it is recessive
alleles found on the sex chromosomes are more often inherited in men
then women.

1. fold your hands together so your thumbs cross over ,and look at your thumbs. which thumb feels most "comfortable" on top is actually controlled by a gene. the left thumb folding over the right thumb is a domi

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.

Anormal strand of dna is shown below, followed by the same strand of dna after mutations have occurred.