Many sponges produce both eggs and sperm and thus are
a. monoecious.
b. dioecious.
c. hermaphroditic.
d. both a and c.
c
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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?
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____________________ Indicate whether the statement is true or false.
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.
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.