For how long can human oocytes remain arrested in the diplotene stage of the first meiotic division?
a. 1 month
b. 9 months
c. 10 years
d. 50 years
Ans: d. 50 years
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Gastric bypass surgery
a. is more effective than standard weight loss methods. b. reduces the size of the patient's stomach and small intestine. c. reduces the amount of ghrelin secreted, so the patient feels less hungry. d. may increase the risk of vitamin and mineral deficiency. e. does all of these
The organisms responsible for the majority of primary production in marine environments are the copepods
Indicate whether the statement is true or false
A molecule with a sugar, a phosphate, and a nitrogen base is.
a) an amino acid b) a fatty acid c) a glucose d) a nucleotide
If a 2n cell has three chromosome pairs, how many different combinations of chromosomes are possible in gametes after meiosis?
A) 64 B) 16 C) 32 D) 36 E) 8