Which of the following is considered a reverse mutation that will restore the wild type phenotype?
A. Mutation to a different base sequence, but one that restores the amino acid sequence in the protein to the wild type sequence
B. True reversion back to the wild type base sequence
C. A mutation that restores the function of a protein, even though it does not restore the base sequence or the amino acid sequence to the wild type
D. All of the choices are correct.
Answer: D
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Which of the following families of proteins is associated with the contractile ring?
A) rho B) alpha C) sigma D) kappa E) delta
The major difference between the human male and
female reproductive systems is the a. provision of a site for fertilization and embryo development in the female. b. production of haploid gametes only by the male. c. diploid polar bodies of the female. d. generation of millions of eggs but only thousands of sperm each month. e. presence of a duct system opening to the body’s exterior only in females.
Hardy-Weinberg states out that original genotype proportions within a population remain constant across generations if certain assumptions were met. These assumptions includeA) the occurrence of random mating. (Select all that apply.)B) the lack of selection.C) the absence of polymorphic loci in the population.D) a large population size. E) an absence of gene flow.
What will be an ideal response?
The chromosomal aberration that causes cri-du-chat syndrome can be referred to as a(n) ________
A) duplication B) reciprocal translocation C) inversion D) simple translocation E) segmental deletion