A seed's response to gravity is called

A. phototropism.
B. organotropism.
C. chemotropism.
D. thigmotropism.
E. gravitropism.


E. gravitropism.

Biology & Microbiology

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Describe two roles viruses have in the open ocean

What will be an ideal response?

Biology & Microbiology

Given the following sequence of genes on a chromosome, determine what change in chromosome structure occurred. (the * indicates the centromere)

before A B C D * E F G H after A B C D * E F E F G H A. Terminal deficiency B. Interstitial deficiency C. Inversion D. Gene duplication

Biology & Microbiology

The amount of infecting agent received by susceptible individuals is called the infectious

A. exposure. B. number. C. dose. D. level.

Biology & Microbiology

If the two alleles for a particular gene are identical the gene pair is

A. homozygous. B. dominant. C. homologous. D. recessive. E. heterozygous.

Biology & Microbiology