The 10,000 origins of replication in mammalian cells suggests that there is
A) at least one origin of replication per loop of DNA.
B) probably one origin of replication every other loop of DNA
C) a random distribution of origins of replication across the genome.
D) an even distribution of origins of replication across the genome.
A) at least one origin of replication per loop of DNA.
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If we want to know the percentage of particular genotypes within an actual population, assuming
complete dominance and two alleles, the one measurement we have to actually make is of the frequency of the
a. heterozygous phenotypes. b. heterozygous genotypes. c. homozygous dominant genotypes. d. dominant phenotypes. e. recessive phenotypes.
Enzymes classified as ________ convert chemical
bond energy to light energy. a. catalases b. lipases c. proteases d. amylases e. luciferases
Adrenoleukodystrophy (ALD) is a recessive, X-linked disease resulting in defective enzymes attacking myelin in the nervous system. Which genetic predictions are possible for the offspring of a male with ALD and a female carrier of the disease?
In humans, normal vision dominates color-deficiency, and both are X-linked. (The genes are located on the X chromosome.) A color-deficient male marries a woman who is heterozygous for normal vision. If they have a boy, the chance that he will be color-deficient is
A. 100%. B. 0%. C. 75%. D. 50%.