Which of the following is most likely the result
of a neutral mutation?
a. fingerprint patterns
b. larger brains
c. standing upright
d. digestion of cellulose
e. fur
A
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An allele of the pea color gene specifies the enzyme Sgr, which normally functions in a pathway to break down chlorophyll during pea maturation, resulting in yellow mature peas. A second allele of the Sgr gene produces no enzyme and is the ________ allele.
A) dominant B) recessive C) wild-type D) functioning
Similar body parts are not always homologous
They may have evolved independently in separate lineages as adaptations to the same a. reproductive isolation of these groups. b. environmental pressures. c. reduced genetic variability in these groups. d. identical genes in all three groups. e. factor as all of these.
Every cell within one organism has the same genome. In what way(s) can these cells differ from each other? (Select all that apply)
A. Ratio of organelles B. Number of chromosomes C. Number of genes in the DNA D. Surface area of cell membrane E. Proteins produced
For the purposes of this question, assume that being Rh+ is a consequence of D and that Rh? individuals are dd. The ability to taste phenylthiocarbamide (PTC) is determined by the gene symbolized T (tt are nontasters). A female whose mother was Rh?
has the MN blood group, is Rh+ and a nontaster of PTC, and is married to a man who is MM, Rh?, and a nontaster. Assume that all the loci discussed in this problem are autosomal and independently assorting. Which of the following is NOT a possible genotype of the children? A) MMddtt B) MNDdtt C) MNDDtt D) MMDdtt E) MNddtt