The color of a daisy's petals is a(n) ________, the instructions for which are found in a gene controlling petal color. There may be many alternate versions of this gene, which are called __________.

A) trait; chromosomes
B) trait; alleles
C) base pair; alleles
D) base pair; traits
E) allele; traits


B) trait; alleles

Biology & Microbiology

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A change in a nucleotide sequence that results in addition or deletion of a single nucleotide and largely changes the amino acid sequence of the resulting peptide is known as a

A) nonsense mutation. B) silent mutation. C) missense mutation. D) frameshift mutation. E) none of the above

Biology & Microbiology

The movement of water is critical to life. Discuss how the movements of water (both horizontal and vertical) affects climate and coastal productivity

What will be an ideal response?

Biology & Microbiology

Which of the following cells are diploid?

a. spermatids b. primary spermatocytes c. secondary spermatocytes d. spermatogonia e. both primary spermatocytes and spermatogonia

Biology & Microbiology

An activator protein would have which of the following effects on an operon with a positive control

mechanism? a. stimulate transcription b. turn off transcription c. stimulate transcription when a coactivator is bound to the allosteric site d. inhibit transcription when a coactivator is bound to the allosteric site e. no response

Biology & Microbiology