The phenotypic differences between chimps and humans is best explained by _____
a. the high variation in the number of different genes between the two species
b. the high number of inversion sequences
c. epistatic changes to genes
d. patterns of gene expression and regulation
e. the large amount of “junk DNA” found in chimpanzee genomes
d
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The fossil remains of animals with body plans recognizable as arthropods, echinoderms, mollusks, and other bilaterians first appeared during the _____ Period, around _____ million years ago
A. Ediacaran; 575 B. Cambrian; 542 C. Devonian; 420 D. Devonian; 360 E. Permian; 100
Herpes simplex, like other ulcerating genital diseases,
A. promotes the spread of AIDS. B. inhibits the spread of AIDS. C. inhibits the growth of other viral disease. D. is easily cured with antibiotics.
When only one copy of a human beta globin gene codes for valine instead of glutamic acid in position 6, then that person is ________
a. capable of making both normal and abnormal hemoglobin b. completely normal c. affected with sickle cell anemia d. none of the choices
What kind of trend does this graph illustrate? (0 represents the minimal possible value for the character, like minimum possible body size)
A. passive B. active C. average D. driven