Mendel’s experiments with pea plants yielded useful results because
A. pea plants exhibit continuous variation.
B. pea plants exhibit a variety of inheritance patterns.
C. pea plants show discontinuous variation and complete dominance.
D. pea plants are sterile.
E. more than one of these are correct.
C
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A peptide bond _____
A) forms between the functional R-groups of different amino acids B) forms between the central carbon and the amino R-group of a single amino acid C) forms the primary structure of proteins D) does not play a role in maintaining the tertiary structure of proteins
The end of the skeletal muscle that remains stationary during a movement is
(a) the action. (b) the origin. (c) the insertion. (d) none of the above.
The zoo decides to keep all of Gus and Ida's descendants under zoo conditions for the next 30,000 years. They breed only with each other. You visit the zoo in 30,000 years and see their offspring
Do you expect their offspring, which are alive in 30,000 years, to be identical in genotype and phenotype to Gus and Ida? Keep in mind, polar bears start reproducing when they are between 5 and 10 years old, and adult females give birth to two cubs every 2-3 years. A. Yes, because evolution only occurs in nature. B. Yes, because they had a small population to begin with (only two bears), so there was little genetic variation to start. C. No, because mutation would occur occasionally and there are selective pressures that exist in artificial as well as natural environments. D. Maybeâ€"it depends on mutation rates and strength of selective pressures.
Which of the following is NOT needed for transcription?
A. enzymes B. DNA C. RNA nucleotides D. ribosomes