Some traits are multiple-allele traits, meaning there are more than simply one recessive and one dominant allele possible. Which of the following is not an example of a multiple-allele trait?
A. sickle-cell disease
B. cystic fibrosis, which is controlled by more than 300 different alleles
C. blood grouping, which is controlled by the interaction of three different alleles
D. All of these answer choices are correct.
Answer: D
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The most common phenotype or allele for a gene in a population is referred to as the
A. F1 generation. B. P generation. C. wild-type. D. dominant population. E. recessive population.
In a trait that shows continuous variation, what can we infer if the variance is low?
A) The majority of individuals will be far above the mean. B) The majority of individuals will be very close to the mean. C) The majority of individuals will be far below the mean. D) Relatively few individuals will be very close to the mean.
Documented transmission of HIV involves
A. mosquitoes. B. contaminated food. C. respiratory droplets. D. unprotected sexual intercourse and contact with blood/blood products. E. All of the choices are correct.
The sugar found in DNA is a(n) ____________________
Fill in the blank(s) with correct word