A. Test crosses can be done for monohybrid crosses and dihybrid crosses
B. A homozygous recessive is crossed with an individual with a dominant phenotype
C. Test crosses are used to determine genotypes of humans with dominant phenotypes.
D. The genotype of one parent is unknown and is determined using the cross.
(I thought it was #1, but got it wrong on a quiz!) Thanks!!
2006-11-30 07:52:59 · 5 answers · asked by wendy h 3 in Science & Mathematics ➔ Biology
Ans. C
What human would subject themself to this? Besides, a human probably couldn't produce enough offspring in a lifetime to make the test reliable.
2006-11-30 13:55:05 · answer #1 · answered by ursaitaliano70 7 · 0⤊ 0⤋
If answer C really says "humans" then that's the wrong answer.
D is right, in genetics we crossed unknown genotype fruit flies with known genotype fruit flies to help determine their genotypes blah blah blah.
Anyhow, we don't do crosses with humans. They get crabby when we try :P
2006-11-30 08:44:23 · answer #2 · answered by John V 4 · 0⤊ 0⤋
The answer is C. The test cross is used when you do not know the genotype of one parent.
2006-11-30 09:39:55 · answer #3 · answered by puckett34 1 · 0⤊ 0⤋
the correct answer is D
2006-11-30 08:48:19 · answer #4 · answered by Gardenia 6 · 0⤊ 0⤋
It's D.
2006-11-30 08:15:37 · answer #5 · answered by THE UNKNOWN 5 · 0⤊ 0⤋