Microevolution is the result of all of the following EXCEPT
a. chance variation.
b. change in gene frequency.
c. mutation.
d. natural selection.
e. large scale patterns or trends.
E
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Which of the following statements explains why all of the F1 females from a cross between a red-eyed homozygous female and a white-eyed male are heterozygous?
A. The male parent provides them with a white-eye allele on the X and a red-eye allele on the Y. B. The male parent provides them with a white-eye allele on the X, and the female parent provides them with a red-eye allele on the Y. C. The male parent provides them with a white-eye allele on the X, and the female parent provides them with a red-eye allele on the X. D. The female parent provides two X chromosomes to each daughter who both carry the red-eye allele. E. None of the answer options is correct.
Human immunodeficiency virus (HIV) is classified as
A. a retrovirus. B. a liver carcinogen. C. a skin-touch transmissable virus. D. responsive to antibiotics. E. a general mammalian infectious virus.
Classically, nature and nurture have been considered as two very separate factors impacting
phenotype. Considering what we have learned of methylation, is this always the case? What will be an ideal response?
Many algal species have life cycles consisting of alternating haploid and diploid generations. Which sentence describes the organisms that comprise the most common life cycle in brown algae?
a. They are unicellular in both the haploid and diploid stages. b. They are colonial in both the haploid and diploid stages. c. They are multicellular in both the haploid and diploid stages. d. They are multicellular in the haploid stage and unicellular in the diploid stage.