In humans, fertilization usually occurs:

A. in the vagina.
B. in the cervix.
C. in the uterus.
D. in the fallopian tubes.
E. in the ovaries.


D

Biology & Microbiology

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Viruses that kill bacterial host cells during each cycle of infection are called ____

a. virulent bacteriophages b. enveloped viruses c. temperate bacteriophages d. phages e. nonvirulent bacteriophages

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During prophase II, ____

a. a new spindle forms b. crossing over occurs c. chromosomes are single-stranded d. the cell is diploid e. the nuclear envelope re-forms

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Chromosomes are duplicated during which period?

a. M b. D c. G1 d. G2 e. S

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The mutant huntingtin protein is _____________________, meaning that it kills cells, such as those in the brain and

nervous system. Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology