Which of the following statements is correct?
A female mouse from a true-breeding wild-type strain was crossed to a male mouse with apricot eyes (ap) and grey body (gy). The F1 mice were wild-type for both traits. When the F1 were interbred, the F2 were distributed as follows:
A) ap and gy are unlinked
B) ap and gy are linked on an autosome and 10 map units apart
C) ap and gy are linked on an autosome and 20 map units apart
D) ap and gy are X-linked and 10 map units apart
E) ap and gy are X-linked and 20 map units apart
D) ap and gy are X-linked and 10 map units apart
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The formation of carbonic acid in the oceans directly results in
A) increased sea surface temperatures. B) inhibition of shell growth in marine animals. C) increased marine biodiversity. D) increased pH.
What would happen if the plasma membrane were composed solely of phospholipids and no proteins?
A) Immune reactions would not be affected. B) The movement of molecules across the membrane would not be affected. C) All movement of molecules across the membrane would cease. D) Simple diffusion and osmosis would continue to occur. E) Only water would be able to pass through the membrane.
Tetanus is highly contagious through person-to-person contact
Indicate whether the statement is true or false.
Contained in amino acids, proteins, nucleic acids, chlorophyll.
Choose the letter of the best match: A. nitrogen B. calcium C. potassium D. phosphorus E. magnesium