Males tend to be affected in greater numbers by Xlinked
recessive genetic disorders than are females
because
a. females have two dominant genes for the
disorder.
b. males have only one X chromosome.
c. males have a double dose of the gene.
d. Y chromosomes are not as strong as X
chromosomes.
e. none of these.
Answer: b
You might also like to view...
If the first living things were autotrophs, they
A. would have used organic molecules as a source of energy. B. would have engaged in photosynthesis. C. would have engaged in chemosynthesis. D. All of these answers are true.
Peripheral proteins that allow cells to bind to one another are called:
What will be an ideal response?
What would be the consequence if gastrulation did not occur?
A) Cleavage would not occur in the zygote. B) Embryonic germ layers would not form. C) Fertilization would be blocked. D) The blastula would not be formed. E) The blastopore would form above the gray crescent in the animal pole.
A student is shopping for antibacterial hand cleansers and is trying to decide which one to buy. One is a "waterless" hand gel containing 70% isopropanol, the second is an "antibacterial" hand soap containing triclosan (a phenolic), and the third is a wipe that lists benzethonium chloride (a synthetic quaternary ammonium salt) as the active ingredient. Compare and contrast these cleansers in
terms of the action of the antimicrobial ingredient and the level of disinfection (degerming, germistatic, germicidal). What will be an ideal response?