An herbivore is indicated by
a. A.
b. B.
c. C.
d. D.
e. E.
B
You might also like to view...
Which zone experiences the most abiotic change over a 24-hour period?
A) A B) B C) C D) D E) E
Genetic studies of an animal show that eye color is controlled by an autosomal gene with the dominant allele (R) for
red eye color and the recessive allele (r) for yellow eye color. A second autosomal gene has the dominant allele (T) for paws with thumbs and the recessive allele (t) for paws without thumbs. The genetic cross RRTT x rrtt creates offspring with genotype RrTt. One of those dihybrids is mated in a testcross (RrTt x rrtt). If the two genes are completely linked (no recombination occurs between them), then the testcross should produce offspring with the phenotype ratio ____.
a. 3 red-eyed with thumbs : 1 yellow-eyed without thumbs. b. 1 red-eyed with thumbs : 1 yellow-eyed with thumbs: 1 red-eyed without thumbs: 1 yellow-eyed without thumbs. c. 1 red-eyed with thumbs : 1 yellow-eyed without thumbs. d. 9 red-eyed with thumbs : 3 yellow-eyed with thumbs: 3 red-eyed without thumbs: 1 yellow-eyed without thumbs. e. 1 yellow-eyed with thumbs : 1 red-eyed without thumbs.
If a virus-injected gene interrupts a growth control gene, ____ could result
a. diabetes b. cancer c. hemophilia A d. sickle-cell anemia e. heart attack
Suppose that a genetics researcher concludes that the probability of obtaining a double dominant phenotype in an F2 cross is 9/16. This conclusion can be valid only if one or more assumptions are true. Which of the following is a necessary assumption?
A: Alleles have an equal probability of separating into gametes. B: The two genes assort independently. C: The sample size is small. D: Both a and b E: Both b and c