3. Coat color in cats is a codominant trait and is also located on the X chromosome. Cats can be black, orange or calico. A calico cat has black and orange splotches. In order to be calico. the cat must have an allele for the black color and an allele for the orange color. a. Use a punnett square to show why there are no male calico cats. A female calico cat is crossed with a male black cat. What are the phenotypes of the offspring and in what proportion? b.

3. Coat color in cats is a codominant trait and is also located on the X chromosome. Cats can be black, orange or calico. A calico cat has black and orange splotches. In order to be calico. the cat must have an allele for the black color and an allele for the orange color. a. Use a punnett square to show why there are no male calico cats. A female calico cat is crossed with a male black cat. What are the phenotypes of the offspring and in what proportion? b.

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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8. Albinism in humans is heritable condition resulting in the inability to produce the pigment melanin, which is responsible for hair, eye and skin coloration. The allele for the albino condition is recessive to the allele for melanin production. What is the probability of two heterozygous parents producing a family of two normal children and one albino child?
2. Cross a Brown and White Spotted Cow with a White Cow. What is the percentage of the genotype and phenotype of the offspring? What type of punnett square will you be using for this cross? Codomnent BB WW Parents: Genotypes: P1 x P2 Offspring: Genotype: Phenotype:
3. Cross a Red Rose and Pink Rose. The other phenotype for this type of Rose is white. What is the percentage of the genotype and phenotype of the offspring? What type of punnett square will you be using for this cross? Parents: Genotypes: P1 x P2 Offspring: Genotype: Phenotype:
2. A person with a curly hair mates with a person having a straight hair. All their offspring have wavy hair (indicating incomplete dominance). What would be the result of a cross between two wavy haired individuals? Give the genotypic and phenotypic ratio.
3. Mendel crossed that was homozygous dominant for flower color and heterozygous for height with a plant that was heterozygous for flower color and homozygous recessive for height. Do a punnet square and calculate possible genotypes and phenotypes of this cross. Dominant for flower color = P (purple) Recessive for flower color = p (white) Dominant for height = T (tall) Recessive for height =t (short) %3D P1: PP X Tt Pp X tt PT Pt PT Pt Pt PPTT PPtt PPTT PPtt Pt PPTT PPtt PPTt PPtt pt PpTt Pptt PpTt Pptt pt PpIt Pptt PpTt Genotypes: Phenotypes: Genotypic Ratio: Phenotypic:
. In corn, three dominant alleles, called A, C, and R,must be present to produce colored seeds. GenotypeA/− ; C/− ; R/− is colored; all others are colorless.A colored plant is crossed with three tester plants ofknown genotype. With tester a/a ; c/c ; R/R, the coloredplant produces 50 percent colored seeds; with a/a ;C/C ; r/r, it produces 25 percent colored; and withA/A ; c/c ; r/r, it produces 50 percent colored. What isthe genotype of the colored plant?
5. If individual IV-9 is a male, what is the probability that he would be affected with dark blue skin color?
The coat colour of some dogs is an example of an epistatic interaction. The common alleles are black (B) and brown (b). There is a separate gene on a separate chromosome that influences coat colour; it prevents colour formation and causes a white coat. L = prevents color formation and causes a white coatl = allows colour formation to occur.If a white dog heterozygous for both traits is crossed with a black dog that is heterozygous for the color gene, which of the following represents the phenotypes of the offspring? Select one:
. Set up the Punnett square for each of the following crosses. These crosses are all for the trait of round (dominant) vs. wrinkled (recessive) in sweet peas. 1. Rr x Rr What percentage off the offspring will be round? _____________________ 2. RR x Rr What percentage off the offspring will be round? _____________________ 3. Rr x rr What percentage off the offspring will be wrinkled? _____________________