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

Biology & Microbiology

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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

Biology & Microbiology

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).

Biology & Microbiology

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

Biology & Microbiology

Why could HIV viruses be considered a cost of sexual reproduction? Keep your answer to one sentence

What will be an ideal response?

Biology & Microbiology