Testes in humans are outside of the body
because
a. sperm require a lower temperature to
mature.
b. sperm require a greater diffusion of oxygen
that they wouldn’t get inside the body.
c. sperm formation is stimulated by motion.
d. sperm formation is hindered by the extreme
darkness found within the body.
e. of all of these factors
A
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The prevalence of the allele for sickle cell anemia in some populations is an example of?
A. Heterogeneous environments B. Balancing selection C. Inverted selection D. Non-Darwinian selection E. Nonrandom mating
The molecule ________ carries the genetic "blueprints" for all forms of life on Earth
Fill in the blank(s) with correct word
In Drosophila, a developmental mutation called ssa (spineless aristapedia) results in flies with mini leg parts on the antennae. What kind of gene is this mutation?
A) gap gene B) pair-rule gene C) homeotic gene D) segment polarity gene E) maternal effect gene
Which of the following is most typical of a case of quantitative inheritance?
A) a ratio of 9:3:3:1 B) continuous variation in phenotypes C) discontinuous variation in genotypes D) lack of a clearly dominant phenotype E) a trait with little to no genetic influence