Which example is an evolutionary adaptation?
A) immunity to a virus caused by vaccination
B) clipped ears on a dog to prevent the dog from developing ear infections
C) webbed feet on a bird
D) a grizzly bear learning to open a Dumpster
C
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The ability to control defecation is because the anal sphincter is made of:
a. skeletal muscle b. elastic connective tissue c. fibrous connective tissue d. tendon e. cardiac muscle
The enzyme ________, that is found in tears and saliva, can hydrolyze the bonds in the glycan chains of certain bacterial cell walls.
Fill in the blank(s) with the appropriate word(s).
Quantitative inheritance involves the interaction of a number of gene loci. The pattern of genetic transmission typical of quantitative inheritance is ________
A) discontinuous distributions such as 3:1 B) a 9:3:3:1 ratio C) usually a pattern that clearly reflects dominance and recessiveness D) continuous variation of phenotypic expression E) typical of Mendelian inheritance
Why could HIV viruses be considered a cost of sexual reproduction? Keep your answer to one sentence
What will be an ideal response?