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Monohybrid Cross
1.
while short whiskers byits recessive
III cats,. long. whiskers are. due. to adominant gene
allele w. If a heterozygous long whiskered cat mated with a heterozygous long whiskered
female cat, what would be the genot}[pe of the F1 generation?
2.
If a short whiskered cat from the F1 generation were to mate with one of the heterozygous
long whiskered cats from the F1 generation, what would be the genotype of the F2
generation?
3.
In sheep, white is due to domLnant gene W, black to its recessive allele w. A white ewe is
mated to a white ram and produces a black lamb. What other colors could be produced?
4.
In pigeons, the checkered pattern. is dependent on a dominant gene C, and plain pattern on
the recessive allele Q. Diagram a cross between a checkered pigeon and a plain pigeon
each homozygous for the trait displayed.
5.
YY...,.
In rabbits, black fur is dependent on a dominant gene S, and a br()wn on the recessive allele
Diagram a cross between a heterozygous black rabbit and a homozygous brown rabbit.
Q.
6.
In dogs, wire hair is due to a dominant gene W, smooth hair to its recessive allele w. Two
wired haired dogs produce a male pup which is smooth. If they produce another offspring,
could it be smooth? If so, what are the chances of it being smooth? List the genotypes of all
the animals mentioned in this problem.
7.
In rabbits, black is dominant over white. If we let the letter S stand for black and the small
letter Q stand tor white, what would be the results of crossing a homozyg.ous black male and a
homozygous white female?
8.
In man, normal pigmentation is due to a dominant gene C, albinism to its recessive allele g.
A normal man marries an albino woman. Their first child is an albino. What are the
genotypes of these three persona?
like?
If there are more'dliidren;
what would they probably be
9.
In pea plants, round seeds are dominant over wrinkled seeds. If we let the letter R stand for
round, and the small letter r stand for wrinkled, what would be the result of a cross between a
heterozygous round pea plant and a homozygous round pea plant?
10.
An albino man marries a normally pigmented woman. They have nine children all normally
pigmented. What are the genotypes of the parents and the children?