Do you believe that natural selection could have also affected the behavior of humans towards dogs over time? Why or why not? Provide a short explanation of how this might have happened
What will be an ideal response?
ANS:
Answers will vary, but may include the cooperative hunting and protective advantages for humans who be-friended dogs. Behavioral changes in humans might include lower blood pressure and feelings of lowered stress and pleasure associated with pet companions.
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Alternative forms of genes are called
(a) homologues. (b) locus. (c) loci. (d) alleles.
Which of the following is not true of the kinetic proofreading reaction of bacterial RNA polymerase?
A. rNTP is the product. B. It occurs when the enzyme stalls after incorporating a mismatched base. C. The type of reaction is pyrophosphorolysis. D. Water is the nucleophile. E. Pyrophosphate is a reactant.
In an isolated population of fruit flies, 4 percent of the individuals have pink eyes, a homozygous recessive condition,
and 96 percent have the dominant black eye phenotype. What percentage of the population are heterozygotes?
a. 32% b. 16% c. 48% d. 88% e. 4%
Why are lampreys classified as vertebrates?
A) They lack gills. B) They are ectothermic. C) They lack jaws. D) They have an exoskeleton. E) Their nerve cord is surrounded by cartilage.