Two parents with widow's peak and short fingers have a child with a continuous hairline and long fingers. What are the genotypes of the two parents? (W = widow's peak; S = short fingers)
Select one:
a. WWSS × wwss
b. wwss × WWSS
c. WWss × WWss
d. WwSs × WwSs
e. WwSs × wwss
d. WwSs × WwSs
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Restriction is
A) the viral process whereby a host's DNA ceases normal functioning. B) the viral process whereby the virus prevents other viruses from entering the cell. C) a general host mechanism to prevent the invasion of foreign nucleic acid. D) a general host mechanism to prevent virus particles from further infective action.
It would be necessary to use a tuberculocidal agent to kill a particular species of:
A) Clostridium. B) Mycobacterium. C) Staphylococcus. D) Streptococcus.
Genetic comparisons indicate that hominids and apelike ancestors diverged approximately ________ years ago
a. 4 - 5 million b. 1.1 - 1.0 million c. 250,000 - 280,000 d. 2.2 - 2.8 million e. 6 - 8 million
What have studies of glucose transport in liposomes revealed?
a. Glucose is transported against a concentration gradient. b. Glucose moves readily across the membrane by simple diffusion. c. Glucose phosphates move readily across the membrane by simple diffusion. d. The binding of glucose triggers a conformational change in the carrier protein. e. The transport of solutes via carrier proteins is faster than via channel proteins.