In cats, a fur color gene is on the X chromosome. At this locus, cats can have a black allele or an orange allele. Cats who are homozygous for the black allele have black fur, cats who are homozygous for the orange allele have orange fur, and cats who are heterozygous at this locus are tortoiseshell. What offspring would you expect from a cross between an orange female and a black male?
A. tortoiseshell females and orange males
B. tortoiseshell females and black males
C. orange females and black males
D. black females and orange males
E. tortoiseshell females and tortoiseshell males
Answer: A
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Blue flower color (B allele) is dominant to white (b allele). If a population of plants in Hardy-Weinberg equilibrium contains white flowers (bb) at a frequency of 0.04, what is the frequency of the heterozygous genotype?
A. 0.96 or 96% B. 0.2 or 20% C. 0.32 or 32% D. 0.64 or 64% E. 0.8 or 80%
Vocal cords are made of:
a. smooth muscle b. cartilage c. skeletal muscle d. ligaments e. tendons
Carbon is not stored in plant:a
trunks. b. stems. c. roots. d. foliage. e. it is stored in all of these.
What does fitness mean when speaking in terms of evolution?
A) Level of overall health of the individual B) How many offspring an individual produces C) Level of overall health of the population D) The size and diversity of the gene pool