Antigens on red blood cells are hereditary traits that allow blood to be typed in different ways. One system is based on a gene with two alleles, M and N. If the frequency of the M allele in a population is 0.4, then according to the Hardy-Weinberg rule, the expected frequency of the heterozygous MN genotype is ________.
A. 0.36
B. 0.16
C. 0.6
D. 0.48
E. 0.24
Answer: D
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Venom from black widow spiders causes an explosive release of acetylcholine. What would that do to its victims? A) The victim's muscles would be unable to contract. B) The victim's muscles would be unable to relax. C) The victim's cell receptors would no longer be able to bind regulatory hormones. D) The victim's cell receptors would be able to bind regulatory hormones but at a rate greatly exceeding normal rates.
The most likely identification of an anaerobic gram-negative bacilli that will fluoresce brick red or has a brown-to-black-pigment is:
a. nonpigmented Prevotella. b. Porphyromonas spp. c. B. fragilis group. d. Fusobacterium spp.
The amount of fat does not affect the frequency of the size of cells found in cookies
Indicate whether the statement is true or false
The striations (lines) of skeletal muscles are caused by the arrangement of many elongated ________
Fill in the blank(s) with correct word