In Atlantic codfish, pressure on the population by commercial fishing caused:

a. the age of sexual maturity to increase
b. larger fish sizes to increase
c. the size at sexual maturity to increase
d. the size at sexual maturity to decrease and the age of sexual maturity to increase
e. the size at sexual maturity to decrease and the age of sexual maturity to decrease


e

Biology & Microbiology

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Let P = purple flowers and p = white, and T = tall plants and t = dwarf. If the upper case letters represent the dominant alleles, what is the phenotype of a plant with the genotype PpTt?  

A.  purple flowers, tall B.  purple flowers, dwarf C.  white flowers, tall D.  white flowers, dwarf E.  pale purple flowers, intermediate height

Biology & Microbiology

Referring to the above diagram, which

structure is responsible for storing bile?

a. F b. G c. H d. I e. J

Biology & Microbiology

Four of the five choices listed below are related by

their description of enzyme properties. Select the exception. a. specificity b. active sites c. activation energy d. substrate e. catalyst

Biology & Microbiology

Which of the following statements regarding repetitive DNA is false?

A) Repetitive DNA is usually found between genes. B) Repetitive DNA is identical in all humans. C) Repetitive DNA is usually repeated multiple times in the genome. D) Repetitive DNA can show great variation among individuals.

Biology & Microbiology