Dwarfism is a recessive trait in Hereford cattle. A rancher in western Texas discovers that several of the calves in his herd are dwarfs, and he wants to eliminate this undesirable trait from the herd as rapidly as possible. Suppose that the rancher hires you as a genetic consultant to advise him on how to breed the dwarfism trait out of the herd. What crosses would you advise the rancher to conduct to ensure that the allele causing dwarfism is eliminated from the herd?

You are trying to find a blood donor to help treat some of your patients. The C-yonce and Kay-Z have 3 children with blood types A , B, and O. The youngest with blood type O needs a transfusion and you're trying to figure out if either of the parents are a match so you test the parent genotypes. Note: Alleles for each blood type are expressed as follows: blood type A= I^A blood type B= I^B blood type O= i Hint: Remember that 2 alleles contribute to a persons blood type. Pay attention to dominant and recessive relationships among the alleles.     1-C-yonce is type B. What must her genotype be? 2-What must Kay-Z’s genotype be? 3-Which parent can give blood to their child ? 4-After running lab tests, it was discovered that the children's blood types were reported incorrectly.(This does not affect the genotypes entered for C-yonce and Kay-Z in the previous questions.) Their youngest actually has blood type AB, and still needs a blood transfusion.  Which parent can donate blood to the child…

You are practicing geneticist who is studying flower color in sweet peas. Wild type sweet pea flowers are purple, however you obtain two different white flowered sweet pea plants from two different breeders. When you cross the plants together they produce plants with purple flowers. What can be said about the white flower alleles in the two sweet pea plants? Select ALL that apply.

Cystic fibrosis (CF) is an autosomal recessive trait. A three-generation pedigree is shown below for a family that carries the mutant allele for cystic fibrosis. Note that carriers are not colored in to allow you to figure out their genotypes.      Normal allele =  F      CF mutant allele =  f        What is the genotype of individual #13? A) ff B) FF C) Ff  D) it is impossible to tell

A horse breeder for the Kentucky Derby recently noticed that one of his  female horses gave birth to an offspring, a daughter horse, that had  several desirable traits to be a successful racing horse. The offspring had  a well-chiseled head on a long neck, high withers, a deep chest, a short  back, good depth of hindquarters, a lean body, and long legs. The farmer  would like to identify which male horse is the offspring’s father for  selective breeding purposes. He asks a local university to run a DNA  fingerprint with DNA samples from the mother, offspring, and the four  male horses on the farm.

A set of true breeding white cows were crossed with true breeding black cows to produce all brown colored offspring. If the F2 generation yielded 113 brown, 47 black and 50 white what type of inheritance would that reflect? Full credit will only be awarded when you show your work and explain your reasoning. The type of inheritance reflected is Codominant since 50% of the offsprings doesn’t reflect the color of either parent. A single new phenotype is presented when one allele of dominance and one allele for recessive trait is paired heterozygous. This shows that for a specified gene, there are three possible phenotypes that can arise from pairing, a phenotype for homozygous dominant, homozygous recessive. For heterozygous, the allele that is dominant, W, is codominant to the allele that is recessive, w, and when paired together neither is expressed but a blended, or mixed phenotype is expressed.

You have been hired to produce a family tree for three generations of a family where a disorder called “blinky” syndrome is observed. People who suffer from blinky syndrome blink their eyes rapidly when they look at bright lights. In order to draw a pedigree chart for this family, you interview Mike and Annie. Neither suffer from this syndrome.  Annie’s mother is normal, while Annie’s father blinked like crazy at bright lights. Annie has one sister and one brother and both of them are unaffected. While Annie’s sister has yet to have kids, her brother married a blinky sufferer. Mike’s mother is a blinker while his father is normal. Mike’s brother is just like their mother. In addition, this brother married a blinker. Mike’s sister is normal - as is her husband and their one boy.  Draw a pedigree chart below in order to answer the following on the next page. Use the letters A and a for the genotypes. If more than one genotype is possible for an individual - you may write it as A with a…

This pedigree (below) shows inheritance of a genetic disorder in a family. Assume the trait is rare. What is the mode of inheritance for this trait? [Select] You know this because that mode of inheritance is characterized by: [ Select] • An affected male parent passes the allele to [Select] and [Select] individuals who have the allele express it and and [Select] of his daughters. • An affected female parent passes the allele to [Select] of her daughters. ㅇㅁㅇㅁ î то ◆ of his sons of her so ?