Crossing over is limited to a single occurrence for a chromosome

Indicate whether the statement is true or false.


ANS: F, occurs multiple times

Biology & Microbiology

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What percentage of terrestrial plants are colonized by arbuscular mycorrhizae?

A) 10 B) 25 C) 50 D) 85

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__________ are electrically excitable cells that

signal other cells by means of chemical messages. Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

The fleshy edible portion of an apple is a(n) 

A. seed. B. embryo. C. gamete. D. ovary.

Biology & Microbiology

Where are most mitochondrial phospholipids synthesized?

a. Mitochondrial inner membrane b. Mitochondrial matrix c. ER d. Golgi apparatus

Biology & Microbiology