Chromosome number is reduced during meiosis because the process consists of
a. two cell divisions without any chromosome replication.
b. a single cell division without any chromosome replication.
c. two cell divisions in which half of the chromosomes are destroyed.
d. two cell divisions and only a single round of chromosome replication.
e. four cell divisions with no chromosome replication.
Ans: d. two cell divisions and only a single round of chromosome replication.
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_____ microfilaments; cytoskeleton. _____ lysosomes; protein synthesis. _____ nucleus; DNA replication. _____cell membrane; barrier between the cell and the external environment _____ Golgi apparatus; modification, processing, and sorting of macromolecules.
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a. sugar b. NADPH c. oxygen d. ATP e. water
The differential expression of genes depending on parental origin is called ____________________
Fill in the blank(s) with the appropriate word(s).
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a. 100 b. 200 c. 400 d. 1000