11. A heterozygote carries A) 2 of the same gene alleles for a trait B) multiple

Question

11. A heterozygote carries
A) 2 of the same gene alleles for a trait
B) multiple genes that produce a single trait
C) 2 different gene alleles for a trait
D) a single gene that influences multiple traits



12. Independent assortment tells us that
A) gametes contain half the genetic information of parental cells
B) the alignment of chromosomes during cell division is a random process
C) as in AB blood types, both alleles in a gene may be expressed separately in an individual
D) many traits will show a smooth, continuous pattern of variation within a population



13. In X-linked traits
A) males cannot ever be affected by the trait
B) males are more likely to be affected than females
C) females cannot be affected by the trait
D) females are more likely to be affected than males



14. Nondisjunction during cell division can result in
A) gametes (and therefore individuals) with abnormal numbers of chromosomes
B) chromosomes with missing genes/deletions (as in cri-du-chat)
C) chromosomes with genes on them that "belong to" other chromosomes (as in leukemia)
D) chromosomes with multiple copies/repeated genes (not related to any known disorders)



15. The enzyme responsible for making copies of DNA is called
A) DNA polymerase
B) replicase
C) helicase
D) RNA polymerase

Explanation / Answer

B B C D B

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