A mutation from the most prevalent form of a gene to a mutant form is called a ________ mutation.

A. reverse
B. forward
C. escalating
D. wild card


Answer: B

Biology & Microbiology

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A proto-oncogene ____

a. always becomes cancerous b. causes cancer c. encodes tumor-suppressing proteins d. repairs DNA e. regulates cell division

Biology & Microbiology

Which of the following is mismatched?

a. oligotrophic lake; high productivity b. cool water; high gas content c. eutrophic lake; pollution d. eutrophic lake; succession e. eutrophic lake; oxygen depletion

Biology & Microbiology

In ________, sex is determined by the ratio of the number of X chromosomes to the number of haploid sets of autosomes

A) humans B) C. elegans C) Drosophila D) reptiles E) Drosophila and C. elegans

Biology & Microbiology

The ________ help(s) plants retain water.

A) hypha B) cuticle C) mycorrhiza

Biology & Microbiology