During gastrulation, _____
A) the neural tube forms
B) the blastula forms
C) somites form
D) three germ layers form
Answer: D
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If the frequency of a recessive gene in a population in genetic equilibrium is 40 percent, in the next generation. the
frequency of that gene would be ____. a. 20 percent b. 40 percent c. 80 percent d. 2pq e. unpredictable
________________ is released from the posterior pituitary gland, acts slowly, and regulates the rate at which the body loses water through the kidneys.
A. Epinephrine B. Norepinephrine C. Antidiuretic hormone D. Testosterone
The two populations represented in boxes 1 and 2 of the figure
A. have different allele frequencies.
B. are genetically identical.
C. contain the same alleles.
D. are probably different species.
Health care providers determine the specific allergen that is generating symptoms by using a blood test to look at ________ levels
A) IgA B) IgE C) IgG D) IgD E) IgM