The tissue lining the mouth, organs of the digestive system, and inner surfaces of the lungs is classified as
A) connective.
B) epithelial.
C) nervous.
D) muscle.
E) connective and nervous.
B
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Height (tallness) in humans is a polygenic trait. Assume the following: There are 4 genes that determine height (Aa, Bb, Cc, Dd). Each dominant allele adds 2 inches of height to an individual. The height of the recessive individual (aa, bb, cc, dd) is 5 feet. What is the height of a person with the genotype (AA, Bb, cc, DD)?
A. 5 feet, 4 inches B. 5 feet, 10 inches C. 5 feet, 8 inches D. 6 feet, 6 inches E. 5 feet, 6 inches
Your mother has albinism, which is a recessive trait. Your father has cystic fibrosis, which is also a
recessive trait. You just got married and discover that your new father-in-law has albinism and cystic fibrosis. What are the odds that your first child will have both albinism and cystic fibrosis?
a. 1/16. b. 1/8. c. 1/4. d. 1/2. e. 0.
Of those listed below, which category of classification is the most narrow?
A. Domain B. Family C. Class D. Genus
Speciation occurs ____
a. after populations become reproductively isolated b. when mutations generate observable differences c. when transitional forms develop between different populations d. when natural selection pressures reach their maximum e. randomly as mutations build up in a population