hat does a phenotype ratio of 3:1 among offspring in a monohybrid cross indicate?   The alleles that govern one trait assort into gametes together with the alleles that govern another trait.   The alleles that govern one trait assort into gametes independently of alleles that govern another trait.   It indicates that the alleles governing the phenotypes do not follow a Mendelian inheritance pattern.   It indicates that the alleles governing the phenotypes follow a Mendelian inheritance pattern.

In cows, there is a "splotchy" phenotype that is splotches of brown and white. A true-breeding white cow (homozygous recessive) is bred to a true-breeding brown cow (homozygous dominant). In the resulting offspring, 75% have spots of brown and white and 25% are brown. The phenotype described displays what kind of relationship(s) between alleles?     Incomplete penetrance Incomplete penetrance Variable expressivity Variable expressivity Incomplete dominance Incomplete dominance Codominance

What is Mendel’s law of segregation?     Allele pairs separate during the formation of gametes, and pair back up upon fertilisation.     During meiosis, the alleles of two or more genes separate into the gametes independent of each other.     During meiosis. genetic material segregates equally into the resulting gametes.     The separation of alleles into different gametes results in genetically distinct offspring.     During meiosis, genes that are in close proximity on the genome are more likely to cross over together.

When Mendel examined the inheritance of seed colour, he crossed true-breeding green and true-breeding yellow plants. All of the plants produced were yellow seeded. He then crossed the yellow-seeded plants and found that some of the offspring were green-seeded and some were yellow-seeded. What were the genotypes of the original parents? Yy and Yy yellow and green There is not enough information to tell. YY and yy green and Yy

Three different genes determine the coat colour of cats. One of the genes controls the black-based coat colour. There are three alleles for black-based coat colour genes with the following order of dominance: black (B) > chocolate (bch) > cinnamon (bc). Two black cats were crossed. The offspring produced were three black kittens and one chocolate kitten. Which of the following rows identifies the possible genotype(s) of the parents? Select one: a. Parent 1 Parent 2 Bbch Bbch b. Parent 1 Parent 2 Bbch Bbc or Bbch c. Parent 1 Parent 2 Bbc Bbch d. Parent 1 Parent 2 B__ Bbch

A geneticist found that when two platinum-colored foxes are crossed, litters with both platinum and silver-colored offspring are always produced. Over the years, she collected the following data: platinum X platinum 220 platinum foxes and 110 silver foxes Which of the following is the most likely explanation for platinum and silver coat color in foxes?       Silver is homozygous recessive, and platinum can either be homozygous or heterozygous.     Silver is homozygous, platinum is heterozygous, and the platinum allele is lethal when homozygous.     There is epistasis involved.

In horses, two different genes affect the coat. One gene which codes for coat colour has 2 codominant alleles for Brown and White colour coat. The heterozygous form exhibits a tan colour. The second gene codes for presence of hair with hairy (dominant) and hairless (recessive). If the female has tan hairless coat and the male has brown colour and is heterozygous for haired coat, what are the probabilities of the different offsprings they may have?

In rabbits, the dominant allele B causes black fur and the recessive allele b causes brown fur; for an independently assorting gene, the dominant allele R causes long fur and the recessive allele r causes short fur. A homozygous rabbit with long, black fur is crossed with a rabbit with short, brown fur, and the offspring are intercrossed. In the F2, what proportion of the rabbits with long, black fur will be homozygous for both genes?   Show drawings and solution.

You are given two data sets that provide counts of F1 and F2 offspring with given genders and disease phenotypes. The data are generated from an initial parental cross. One parent displays the disease phenotype and one displays the wild-type (WT) phenotype.The WT parent always has a homozygous genotype. There are three possible modes of inheritance that underlie the generation of the data. All are monogenic. They are: (i)   Autosomal Recessive. (ii)  Homozygous Lethal Dominant. (iii) Autosomal Dominant.   One's phenotype is determined by their genotype at the disease locus and the mode of inheritance, as we have seen with the Punnett Square. In this file you are provided with the true mode of inheritance.   is to perform a chi-square goodness of fit test on each of two F2 data sets, and make a decision, based on your statistical analyses as to which F2 data set provides greater evidence for indicating the correct mode of inheritance.   Evidence is measured in the following ways: the…

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.