Some conditions like progeria do not run in families despite being autosomal dominant. How is this possible? What will be an ideal response?
ANSWER: If the autosomal dominant trait is either lethal before the individual can successfully
reproduce, or has enough disturbance on phenotype to prohibit reproduction, the afflicted
individual will not reproduce and the trait cannot be passed on.
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List the four macromolecules that make up cells and give a brief description of the structure and function of each
What will be an ideal response?
Which of the following is necessary for the fetus to develop female gonads?
a. lack of testosterone exposure b. presence of Y chromosome c. estrogen d. progesterone e. both estrogen and progesterone
Which of the following is NOT a predisposing factors to cystitis in females?
A) the proximity of the anus to the urethra B) the length of the urethra C) sexual intercourse D) poor personal hygiene E) None of the answers is correct; all of these are predisposing factors.
Cholesterol can be used as an energy source for the body; where else can it be used?
a. within cell membranes to provide flexibility b. within ribosomes to assist in protein production c. within the nucleus to provide protection for the DNA d. within the nucleus to provide protection for the RNA