Genetic drift may lead to
A) loss of genetic variation in a population.
B) a decrease in the mutation rate of a particular gene.
C) increased heterozygosity at many loci.
D) Hardy-Weinberg equilibrium.
E) All of these
A
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Why would the loss of helper T cells due to HIV infection result in the immunodeficiency associated with AIDS?
A. Helper T cells are central to the activation of other parts of the immune system. B. Helper T cells are normally present in higher numbers, so their loss reduces the total number of immune cells. C. Without helper T cells, plasma cells would not secrete antibody. D. Infection of the helper T cells could lead to infection and loss of progenitor cells, thereby eliminating all immune cells.
Which of the following is generally more complex than the others?
A. Archaea B. Bacteria C. Prokarya D. Eukarya E. microorganisms
The ________ implants in the mammalian uterus
Fill in the blank(s) with correct word
Amino acids are converted to substrates of the Citric acid cycle by (beta-oxidation/deamination/transamination).
Fill in the blank(s) with the appropriate word(s).