A child is diagnosed with Tay-Sachs disease. Both the father and mother are carriers (heterozygous for the disorder). Using the Punnett square, it can be estimated that the probability of them having a phenotypically normal child is:
A. 1/4
B. 2/4
C. 3/4
D. 4/4
C. 3/4
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Migration offers young men the opportunity to earn
a. levirate. b. jiwo. c. départ. d. debbo.
The parents of a potential bride will arrange a match directly with the groom himself (not with his family) only if he
a. is already married, owns his own home, and is well established. b. is not yet married, owns his own home, and is well established. c. is not related to the bride and is not yet married. d. does not plan to leave the Fouta Djallon to earn money.
Among which group is circumcision the central feature of a boy's rite of passage into manhood?
A) ?The Masai people of Kenya. B) ?Irish Catholics C) ?The Ju/wasi people of Botswana. D) ?Japanese.
CO2 emissions cause ocean acidification that adversely affects ocean ecosystems
a. True b. False Indicate whether the statement is true or false