Many sponges produce both eggs and sperm and thus are

a. monoecious.
b. dioecious.
c. hermaphroditic.
d. both a and c.


c

Biology & Microbiology

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To better understand which genes are involved in developmental pathways, geneticists use experimental analyses of mutant phenotypes. What is this analytic approach called?

What will be an ideal response?

Biology & Microbiology

Shivering helps increase body temperature

____________________ Indicate whether the statement is true or false.

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The atomic number of an element is equal to the number of:

A. protons plus neutrons. B. neutrons only. C. neutrons plus electrons. D. protons plus electrons. E. protons only.

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Within a chromosomal sequence of a dog, a researcher identifies a block of base pairs with very similar GC content. This observation is likely the result of:

a. horizontal gene transfer. b. replication errors. c. centromeres. d. gene duplication. e. This is unknown.

Biology & Microbiology