MULTPILE CHOICE PLEASE White wool in sheep is controlled by a dominant allele R,

Question

MULTPILE CHOICE PLEASE

White wool in sheep is controlled by a dominant allele R, and black wool by the recessive allele r. In an isolated population of 6530 sheep, 514 are black, 4981 are heterozygous, 1035 are homozygous white. When will this population be expected to reach Hardy-Weinberg equilibrium? A population has the following genotypic distributions: Which statement best applies to the phenomenon of genetic drift? Most of the genetic variation observed in sexually-reproducing natural population arises from: Ultraviolet radiation can cause: Sunburns can lead to skin cancer because:

Explanation / Answer

69. a) in the next generation (a population which is not in Hardy-Weinberg equilibrium is assumed to reach equilibrium in one generation if the five assumptions of the equilibrium hold true for the population)

70. a) Yes, with allele frequency of p = 0.455, q = 0.544

71. a) The smaller is the population size, the greater is the effect of genetic drift

72. c) recombination of alleles at meiosis. Genetic variation among sexually reproruding organsims is due to crossing over that resulsts in recombination

73. e) all of the above. sunrays have UV rays, repeated exposure leads to DNA damage, repeated attempts to repair introduce more errors, cell get damage

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