A scientist is studying two traits in a snail: body texture and whirls. Smooth body (S) is dominant to bumpy body (s), and whirl (W) is dominant to no whirl (w).

A SsWw and a ssww beetle mate and produce the number of offspring shown in the table. What % recombination is occurring here?

Which order are these genes on based on their map distances shown in the table?

Two white, doubly heterozygous squash plants were crossed, AaBb x AaBb. The phenotypes in the offspring were not as expected with Mendelian inheritance (they did not see 9:3:3:1). Instead the ratio they had was 12:3:1 (white, yellow, green). What is this suggesting?

What is the ratio predicted from this data relating to dragons, where fire breathing and spikes are dominant to their absence?

Jaime is blood Type O. They have two older brothers with blood types A & B. What are the genotypes of the parents with respect to this trait?

In rabbits, brown fur coat colour (C) is dominant to chinchilla (c^ch), which is dominant to Himalayan (c^h), which is dominant to albino (c). Phenotypically, what offspring may be expected from the following cross?

C c^h x c^ch c^h

In a newly discovered rodent (geomets), body fur is due to multiple alleles. There are three alleles; brown (F^b); green (F^g); and albino (f). Both brown and green are dominant to albino, but brown and green are codominant to each other. This genotype (F^bF^g) results in a fourth phenotype - camo. List the possible phenotypes from this cross:

Heterozygous (brown phenotype) x Heterozygous (green phenotype)

A geneticist studying the inheritance of colour in flowers crossed a pure white flower (aabb) with a dark red flower (AABB) and got all pink offspring. Interbreeding the pink flowers produced the following data: 43 dark red 162 red 245 pink 166 light pink 41 white. What is happening here?

A trait being investigated has three genes interacting to cause a phenotype. In this case, how many dominant alleles would be required to produce the most intense phenotype (+10 on a scale of 1-10)?

Petal pigmentation in a species of rose is determined by polygenic inheritance. Cross a red flower (AaBB) with a pink flower (AaBb) and determine the phenotypic ratios of the offspring

In Fruit flies red and white eye colour is determined by a single allele on the X chromosome where white is recessive. Here males are the heterogametic sex. Show a cross between a pure red eyed female and a white eyed male.

What are the ratios of phenotypes of the offspring?

In a species where there are three genes that contribute to a dosage dependent phenotype how many variations could you get in the offspring if you crossed two triple heterozygotes?

The colorpoint allele heirarchy is shown above. A black cat is crossed with a heterozygous siamese cat and produces several litters. When the total offspring are counted we find a ratio of 2:1:1 black: tonkinese: burmese. How is this possible? What is the genotype of the black cat?

A doubly heterozygous walnut cockerel is mated with a single comb hen. How many different phenotypes are produced in the offspring?

What is happening here with these two gene loci?

When one gene influences two or more seemingly unrelated phenotypic traits such as is the case with phenylketonuria in humans, what is this known as?

If a Canelle cat heterozygous at the D locus is crossed with a Bleu cat that is heterozygous at the B locus, which of these phenotypes would be possible in their offspring?

The coat of the cow in the image is an example of which type of genetic phenomenon?