Observable traits are known in genetics as ____
a. phenotypes
b. genotypes
c. homozygous
d. heterozygous
e. homozygous genotypes
ANSWER: a
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Analogous structures form because they evolve as a response to similar environmental pressures.
a. Organisms that share a single ancestor b. Species that remain in the same location over time c. Species that evolved separately from their parents d. Organisms that mutated to survive
Which time period has the greatest richness of fossilized invertebrates?
A) Cambrian B) Carboniferous C) Cretaceous D) Cenozoic
You would not expect sebum to be involved in:
a. keeping hair moist. b. contributing to the color of the skin. c. making the skin supple. d. inhibiting bacterial growth. e. preventing desiccation of the skin.
You analyze two daughter cells of Bacteria A immediately after binary fission. Which of the following is ACCURATE about the daughter cells?
A. They are members of the same colony. B. They have genetically identical chromosomes. C. They are members of the same colony and they have genetic contributions from two different parent cells. D. They are members of the same colony and have genetically identical chromosomes. E. They have genetic contributions from two different parent cells.