Mutations in genes that affect __________ may cause morphological shifts in a lineage.
Fill in the blank(s) with the appropriate word(s).
development
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The ammocoete is the larva of
(a) lampreys. (b) sharks. (c) bony fishes. (d) amphibians.
Select the true statement.
A) Somatic cells are diploid, meaning that they have two copies of the human genome. B) Somatic cells are haploid, meaning that they have one copy of the human genome. C) Sperm and egg cells are diploid, meaning that they have two copies of the human genome. D) Stem cells are haploid, meaning that they have one copy of the human genome.
For a very rare inherited disease, the frequency of heterozygotes in a population is
A) approximately half that of the dominant allele. B) approximately double that of the recessive allele. C) very close to 0. D) near 1.
Four of the five answers listed below follow a
type III survivorship curve. Select the EXCEPTION.
a. most insects b. most reptiles c. many fishes d. humans e. most marine invertebrates