13. Geneticists suspect that the extra chromosome seen in down syndrome usually comes from the egg, rather than the sperm, because
a.eggs are produced so rapidly that there is more chance for error.
b.down syndrome is due to a dominant gene in women, a recessice gene in men
c. most women inherit down syndorme from their mothers
d. eggs are produced in much larger numbers than sperm
e. meiosis takes longer in the ovary, inreasing the likelihood of error
2007-03-30 04:40:24 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Biology
e
2007-03-30 06:10:57 · answer #1 · answered by jmk 3 · 0⤊ 0⤋
See these links:
http://en.wikipedia.org/wiki/Down_syndrome
http://en.wikipedia.org/wiki/Nondisjunction
2007-03-30 13:16:24 · answer #2 · answered by r083r70v1ch 4 · 0⤊ 0⤋
f. Do your own damn homework you lazy, shiftless, good-for-nothing pimple on the buttocks of society.
2007-03-30 12:40:27 · answer #3 · answered by vt500ascott 3 · 0⤊ 0⤋
E
2007-03-30 12:38:57 · answer #4 · answered by chiao_yin2000 2 · 0⤊ 0⤋