__________ is one explanation for why new human species have not emerged in millions of years.
A. The Hardy-Weinberg theory
B. Gene flow
C. Mutation
D. The founder effect
Question 2
Continuous traits are those that __________.
A. are passed from parent to child without skipping any generations
B. are determined by genes at multiple genetic loci and result in a gradation of phenotypic expression
C. are produced by genes shared by all members of a species
D. emerged during Gregor Mendel's attempts to create hybrid pea plants
(a) Mammal species from central Saskatchewan differ greatly in their isotopic signatures. (b) There
Much of the dark space between stars, as seen in the sky of the image above, is due to the human eye
Several species of squirrels have melanistic phases. In large parts of United States and Canada, the
Human chromosomes. (A) Female. (B) Male.
Chromosome Number in Selected Animal Species