Which statement is false concerning movement of molecules across the cell membrane?
A) Water and gas molecules have no difficulty.
B) Small uncharged molecules pass through easily.
C) Large molecules do not pass through easily.
D) Charged molecules do not pass through easily.
E) Lipid molecules do not pass through easily.
Answer: E) Lipid molecules do not pass through easily.
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If the phenotype of pea pod color is determined by incomplete dominance then you would expect the F2 generation from an original cross of true-breeding blue stock with truebreeding yellow stock to be:
A. 25% yellow, 50% green, 25% blue. B. 67% green, 33% yellow. C. 67% blue, 33% yellow. D. 100% green. E. 100% blue.
Which stretch of double-stranded DNA is most likely to be recognized as a restriction enzyme cutting site?
A. 5?-GAATCG-3? 3?-CTTAGC-5?. B. 5?-TCCGGA-3? 3?-AGGCCT-5?. C. 5?-ACCCCT-3? 3?-TGGGGA-5?. D. 5?-TTTTTT-3? 3?-AAAAAA-5?. E. 5?-GTTCAT-3? 3?-CAAGTA-5?.
The changing size ratio between an animal's head and the rest of its body during development is an example of ____
a. allometric growth
b. punctuated equilibrium c. phyletic gradualism d. heterochrony e. paedomorphosis
The law of independent assortment states which of the following?
a. Two alleles will be inherited together during gamete formation. b. Two genes will be inherited together during gamete formation. c. Two genes will segregate during gamete formation. d. Two genes will segregate during mitosis.