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24 Apr 2019
In Down syndrome there is impaired fertility of both sexes, but females are more likely to be fertile than males. Assume that children are born to a female with non- familial Down syndrome and a normal male. What proportion of the offspring would be expected to have Down syndrome assuming no lethality?
a. all
b. 2/3
c. 0
d. 1/2
e. 1/3
Please explain how you got the answer
In Down syndrome there is impaired fertility of both sexes, but females are more likely to be fertile than males. Assume that children are born to a female with non- familial Down syndrome and a normal male. What proportion of the offspring would be expected to have Down syndrome assuming no lethality?
| a. | all | |
| b. | 2/3 | |
| c. | 0 | |
| d. | 1/2 | |
| e. | 1/3 |
Please explain how you got the answer
Keith LeannonLv2
26 Apr 2019
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