In the Hardy-Weinberg equation, the frequency of homozygous dominant individuals in a population is equal to
A) q or p.
B) p2.
C) 2pq.
D) q2.
E) 2p.
Ans: B) p2.
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Albinism is a recessive disorder in which the skin and hair fail to produce pigment. The following question(s) ask you to evaluate the pedigree chart shown here in which "N" is the allele for normal pigmentation and "n" is the allele for albinism. The shaded circles for Deirdre and Shannon represent the only individuals expressing the disorder.
What is Dawn's genotype?
A. Nn B. nn C. NN D. NN or Nn
Refer to Figure 12-2. The segments labeled F are responsible for:
a. linking short DNA segments.
b. synthesizing the leading strand.
c. forming the replication fork.
d. initiating DNA synthesis.
e. unwinding the DNA double helix.
HIV has 9 genes in its RNA genome. Every HIV particle contains two RNA molecules, each molecule containing all 9 genes. If, for some reason, the two RNA molecules within a single HIV particle do not have identical sequences, then which of these terms can be applied due to the existence of the non-identical regions?
A) homozygous B) gene variability C) nucleotide variability D) average heterozygosity E) all except A
Which of the following molecules is a reactant of photosynthesis?
A) CO2 B) glucose C) O2 D) chlorophyll