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Pre-Test
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1
In humans ____ pairs of chromosomes are known as autosomes and ____ pair of chromosomes are known as sex chromosomes.
A)23, 46
B)21, 2
C)22, 1
D)45, 1
2
Duplicated strands of DNA are called ________ and are connected to each other by the __________.
A)chromatids; centrosomes
B)chromatin; mitochondria
C)chromatids; centromere
D)centromeres; chromosomes
3
The type of cell division that results in the formation of gametes or sex cells is __________.
A)mitosis
B)meiosis
C)nondisjunction
D)somatic division
4
The diploid (2n) cells of the testes that begin the meiotic process are called:
A)spermatids
B)secondary spermatocytes
C)sperm
D)primary spermatocytes
5
A male with two or more X chromosomes along with a single Y has ________ syndrome.
A)Turner
B)Klinefelter
C)Down
D)Jacobs





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