Trisomy 21 or Downs Syndrome occurs when there is a normal diploid chromosomal complement or 46 chromosomes plus 1 extra chromosome #21. Such individuals therefore have 47 chromosomes. Assuming that mating occurs between a female w/ Downs Syndrome and a normal 46 chromosome male. What porportion of the offspring would be expected to have Down Syndome
2007-11-04 07:19:41 · 6 answers · asked by damigurl05 1 in Science & Mathematics ➔ Biology
Sounds like a homework question to me and it's your homework! You have to do some of the work.
Best of Luck to You!
2007-11-04 07:22:40 · answer #1 · answered by Tira Misu 7 · 0⤊ 0⤋
i would say that it depends on who has the more prominent gene factor like if the female is dominant then there could be greater risk but if the male is dominant then the risk could be lower but that doesn't mean that it won't happen there are thousands of people with some abnormalities but have normal offspring.
2007-11-04 07:27:55 · answer #2 · answered by todd c 1 · 0⤊ 0⤋
I'm not going to tell you the answer, but make a punnett square that should give you the answer. :)
2007-11-04 07:25:05 · answer #3 · answered by Anonymous · 0⤊ 0⤋
23 r dead
2007-11-04 07:24:13 · answer #4 · answered by raaiaaz 1 · 0⤊ 0⤋
>???
2007-11-04 07:22:50 · answer #5 · answered by Anonymous · 0⤊ 0⤋
....
2007-11-04 07:22:14 · answer #6 · answered by Anonymous · 0⤊ 0⤋