In Drosophila, the wild-type eye color is red. A mutation, vermilion, causes vermilion-colored eyes, unless there is a mutation in another gene, suv, which, when homozygous or hemizygous, results in eyes that are the wild-type red even in the
presence of the vermilion mutation. This is an example of A) forward mutation.
B) reverse mutation.
C) intragenic suppression.
D) intergenic suppression.
E) back mutation.
D
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Genetic mapping involves the idea of mapping the genes linearly, based on what concept?
a. Genes that are located close together will recombine less often than those located far apart. b. Genes mutate at a constant rate which results in a mutation clock that can be used to track time. c. Genes can be mapped based on how often the cell divides because mistakes are made during mitosis. d. Genes that are recessive mutate more often than dominant genes.
The ___ takes up HDLs and uses them to make
___.
a. liver...bile b. small intestine...bile c. red bone marrow...platelets d. yellow bone marrow...fat e. liver...LDLs
The letter “E” in the above figure represents the
a. style. b. ovary. c. stigma. d. anther. e. filament.
After embryonic development, members of the phylum Rotifera are incapable of:
a. reproduction. b. cell division. c. locomotion. d. excretion. e. ingestion.