What percentage of the offspring will be short? Now suppose you cross one of the offspring from the mating in part C above with a budgie whose genotype is BbYy. The IA and IB alleles are codominant they share Genetics practice problems, thus we have an AB blood typebut they are both dominant over the i allele.
But some of their babies do have spots -- some are ff. Set up the square for each of the crosses listed below. A TT tall plant is crossed with a tt short plant. The longhaired black hamster can only pass on the allele combination gs.
A Tt plant is crossed with a Tt plant. What percentage of their offspring will have purple flowers? What proportion will have bronze hairy feathers?
Your son is entering the 4-H county fair for rabbits.
Remember that men are XY and women are XX. A colorblind woman must have the XcXc genotype. What are the genotypes of the parents?
This sets up a 4x4 Punnett square. He must have received one i from his mother -- which makes sense, because she has type O blood and thus the the genotype ii as well -- and one i from his father. He has a male white rabbit without spots and crosses it with a female white rabbit without spots.
Genotype of the parents: A bronze male turkey is mated to a bronze female, and some of the poults baby turkeys produced by this cross are red. This means that he does not have an i allele to pass on to any of his children.
Each girl automatically gets one Xc allele from Dad because the only other option is that she gets the Y chromosome from Dad, which would make her a boy and not a girl.
Predict the results of this cross, both genotype and phenotype. The other parent, by the same reasoning, can pass on either bN or bn. Predict the results of your cross. In guinea pigs, the allele for short hair is dominant.
Some of the baby rabbits have spots.
In guinea pigs, the allele for short hair is dominant. BY, By, bY, or by. Tail spikes are dominant to plain tails.Mendelian Genetics includes problems sets and tutorials on Monohybrid Cross, Dihybird Cross and Sex-linked inheritance.
The Biology Project, an interactive online resource for learning biology developed at The University of Arizona. The Biology Project is fun, richly illustrated, and tested on s of students. Genetics Practice Problems (single trait crosses) Courtesy of The Biology Binder Pictured above is an alien who displays all of the dominant characteristics of its species.
Bio I Revised Nov Name: 2.
3. Genetics Practice Problems Worksheet For each genotype below, indicate whether it is heterozygous (He) or homozygous (Ho). These simple problems were designed for beginners to genetics, students practice determining whether letter combination represents heterozygous or homozogous alleles.
They set up punnett squares for simple single allele traits.
BIOLOGY - Human Biology. GENETICS PRACTICE PROBLEMS. Part 1. Question 1. For each of the diploid genotypes presented below, determine the. If a woman who is homozygous dominant (WW) for widow’s peak (a dominant trait) has a child with a man who is homozygous recessive (ww), will their child have a.Download