Albinism is an autosomal recessive trait in humans. Assume that there are 100 albinos (aa) in a population of 1 million. How many individuals would be expected to be homozygous normal (AA) under equilibrium conditions?
A) 100 B) 999,900 C) 980,100 D) 10,000 E) 19,800
Answer: C
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Tight junctions:
a. Set up a geography of the lipid layer of the cell and only let small molecules but not water pass through b. Set up a geography of the membrane and let only water but not small molecules pass through c. Set up a geography of membrane proteins but adhering junctions stop the water from passing through d. Are protected by the strength of adhering junctions e. Are made out of only one type of protein
Cardiac glycosides, molecules causing a drastic effect on vertebrate heart function, are produced as defensive chemicals by plants belonging to
A. the milkweed and dogbane families. B. the mustard family. C. the grass family. D. the poison ivy, oak, and sumac families. E. the bean family.
The CD marker commonly associated with _____ is CD103.
Fill in the blank(s) with the appropriate word(s).
The __________ insulates and protect the axon for some neurons:
a. axon terminal b. myelin sheath c. cell body d. nucleus