Many chromosome abnormalities (trisomies and monosomies) are not observed in the human population because
a. they are lethal and cause spontaneous abortion of the embryo early in development.
b. all trisomies and monosomies are lethal early in childhood.
c. meiosis distributes chromosomes to daughter cells with great precision.
d. they are so difficult to count.
e. the human meiotic spindle is self-correcting.
Ans: a. they are lethal and cause spontaneous abortion of the embryo early in development.
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____________________ Indicate whether the statement is true or false.
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