Taxonomists today tend to group organisms
into the same category based on
a. similar morphology
b. similar behavior
c. similar geographic distributions
d. similar DNA sequences
e. similar eating habits
D
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The portion of the genome that encodes proteins is called the ____________________
Fill in the blank(s) with correct word
How is brain growth in humans different from other mammals?
A. In humans brain growth is complete by the third trimester. B. In humans brain growth stops at birth. C. Human growth is not allometric. D. In humans brain growth continues after birth. E. Only humans develop a cerebrum.
The least oxygenated blood is indicated by the letter ____
a. A b. B c. C d. D e. E
WT yeast (TRP+) can synthesize the amino acid tryptophan and can grow on media plates lacking tryptophan
In contrast, mutant alleles (trp?) block tryptophan synthesis and result in an inability of mutant strains to grow on media lacking tryptophan. A diploid yeast was made through the cross MATa ADE+ × MAT? ade?. Meiosis was induced in the diploid strain to produce an ascus with four haploid spores, which were separated and grown on plates lacking tryptophan. How many spores are expected to grow into colonies on the plate? A) 0 B) 1 C) 2 D) 3 E) 4