If a cell normally has 20 chromosomes in its diploid stage, how many will be present in each cell at the end of meiosis 2?

a. 20
b. 10
c. 40
d. 5


Answer: b. 10

Biology & Microbiology

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A. gap junctions B. tight junctions C. desmosomes D. hemidesmosomes E. focal adhesions

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Hereditary nonpolyposis colon cancers (HNPCC) ____

a. are rare in the United States, but common in Europe b. begin with a mutation in the APC gene c. are caused by one-of-a-kind DNA sequences called microsatellites d. are caused by one mutation in a single gene e. are caused by several mutations in several different genes

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Albinism is an example of ________

A) a dominant disease B) an autosomal recessive disease C) a sex-linked disease D) a polygenic disease

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The sodium-potassium pump

a. helps establish an electrochemical gradient across the membrane. b. concentrates sodium on the outside of the membrane. c. uses a carrier protein and chemical energy. d. is present in the plasma membrane. e. All of these are correct.

Biology & Microbiology