2006-10-30 17:25:56 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
a monohybrid cross is only a cross between one thing such as eye color, hair color, etc so a dominant trait would be in capital letters, and a recessive trait in lower case. EX:
BB: black hair homozygous dominance
Bb: black hair heterozygous dominance (but still carries the recessive trait) so if you were to cross the two BB x Bb...
B B
B BB BB
b Bb Bb so, 50% or 1/2 would be homozygous dominant for black hair and 50% or 1/2 would be heterozygous dominant for black hair.
for a dyhybrid cross you are crossing two traits. for example, in pea plants let's cross shape and color. R is dominant for a round shape and r is recessive for a wrinkled shape. Y is the dominant color of yellow and y is the recessive green color. so to cross them...
RY Ry rY ry
RY RRYY RRYy RrYY RrYy
Ry RRYy RRyy RrYy Rryy
rY RrYY RrYy rrYY rrYy
ry RrYy Rryy rrYy rryy
The result is a 9:3:3:1 phenotypic ratio.
that's one example each. i hope it helped. if you need two, just follow those examples but change the traits.
2006-10-30 17:40:49 · answer #1 · answered by KEiKo 3 · 1⤊ 0⤋
Monohybrid Example
2016-11-14 00:51:05 · answer #2 · answered by charlostin 4 · 0⤊ 0⤋
This Site Might Help You.
RE:
Write two examples of monohybrid crosses and two examples of dihybrid crosses?
2015-08-06 16:39:04 · answer #3 · answered by Anonymous · 0⤊ 0⤋
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The reason instructors give homework is so the student researches in order to find the answer, and learns for it. This also isn't a 'Geography' question.
2016-04-04 13:15:00 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Errrmmmm........ Shouldn't this be in biology or botany??
Doug
2006-10-30 17:35:04 · answer #5 · answered by doug_donaghue 7 · 0⤊ 0⤋