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TLS Online TPP Program

#Question id: 5810

The main difference between the directed mutation theory and the random mutation theory is:

#Unit 8. Inheritance Biology

The chemical nature of the mutagens.
The effect of the mutation on the phenotype.
The cause of the mutation.
The heritability of the trait.

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TLS Online TPP Program

#Question id: 15194

#Unit 8. Inheritance Biology

Genes that control coat color in mammals represent some of the best early examples of genes with multiple alleles exhibiting different phenotypes. A classic example is the C gene in hamsters. Three of the known alleles of this gene are C, c^a and c^k. Each supplies a different amount of black pigment to the coat hair. The phenotypes of three different homozygous strains are as follows.

would mate the true-breeding c^a c^a hamsters to the true-breeding c^k c^k hamsters to produce heterozygous c^aand c^k F1 progeny, the F1 progeny cack hamsters self fertilized, From the fraction of F2 progeny that have the wild type black phenotype,

Crosses and their interpretation that would have allowed geneticists to come to the conclusion that ca and ck were likely to be alleles of the different gene.

What will be the ratio of F2 hamster;

TLS Online TPP Program

#Question id: 15195

#Unit 8. Inheritance Biology

In the following pedigree shows the segregation of two different recessive traits.

Assuming that both traits are due to linked autosomal genes that are 10 cM apart, calculate the probability that the indicated child will have both recessive traits.

TLS Online TPP Program

#Question id: 15196

#Unit 8. Inheritance Biology

In the following pedigree shows the segregation of two different recessive traits.

Derive a general equation relating the probability that the child will have both traits expressed as a function of the distance between the markers in cM.