Biology, 29.07.2020 06:01 Aurionna101
Although the most frequent forms of Down syndrome are caused by a random error, nondisjunction of chromosome 21, Down syndrome occasionally runs in families. Which of the following is the cause of this form of familial Down syndrome?
A) an inversion involving chromosome 21
B) a chromosomal aberration involving chromosome 1
C) too many X chromosomes
D) a translocation between chromosome 21 and a member of the D chromosome group
E) a maternal age effect
Answers: 2
Biology, 22.06.2019 02:00, vlactawhalm29
How is the national wildlife refuge system similar to the pacific region coastal program? a. both programs are concerned with providing habitats for wildlife b. both programs are primarily concerned with preserving fish species c. both programs have set aside 150 million acres of land d. both programs are under the u. s. fish and wildlife service
Answers: 3
Although the most frequent forms of Down syndrome are caused by a random error, nondisjunction of ch...
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