APEX CHAP 1 Exam Questions with Correct Answers

APEX CHAP 1 Exam Questions with Correct Answers Which statement is true of X chromosomes? - Answer-women have two of them Why is a dominant allele called dominant? - Answer-it dominates the phenotype What is an allele? - Answer-a form of a gene Earlobes can be either attached or detached. the allele for attached earlobes are recessive and the allele for detached earlobes is dominant. what must be true if a boy is born with attached earlobes? - Answer-he has a homozygous genotype What determines the genotype of an organism? - Answer-the alleles they inherit from their parents what is an example of codominance? - Answer-a cow with red hairs and a cow with white hairs mate and produce a cow with both red and white hairs what is an example of incomplete dominance? - Answer-a red flower and a yellow flower mating to produce an orange flower In some flowers, there are two alleles for color, and these can both be expressed equally at the same time. Which best describes this trait? - Answer-codominant What is true of someone with a genotype TT? - Answer-they are homozygous dominant What was Mendel trying to determine? - Answer-how traits are passed to offspring what led to scientists accepting Mendel's ideas? - Answer-scientists discovered chromosomes and DNA