Which of the following is a type of cytokine?
a. complement protein
b. mast cell
c. immunoglobulin
d. lysozyme
e. tumor necrosis factor
E
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According to the principle of segregation, a heterozygous plant with alleles Aa will produce:
A. gametes with only the A allele. B. gametes with only the a allele. C. 50% of gametes with the A allele and 50% of gametes with the a allele, on average. D. gametes in the ratio of 3 A alleles:1 a allele. E. some gametes with the A allele and some with the a allele, but in no predictable ratio.
Calculate the narrow-sense heritability of height between aunts and neices if the observed phenotypic correlation coefficient is 0.1
A. 0.4 B. 2.5 C. 4 D. 0.25
Which disease is caused by bacteria that can paralyze respiratory muscles?
A) E. coli infection B) botulism C) staph infection D) tuberculosis
Fingernails are a component of the ________ system
A) respiratory B) integumentary C) muscular D) skeletal