Rabbit Coat Color Genetics

This video tutorial covers the concept of multiple alleles, focusing on rabbit coat color as an example. It explains the genetic terms locus and genotype, and discusses the dominance hierarchy among different alleles. The video also provides a detailed analysis of possible genotypes and phenotypes for rabbit coat colors, and concludes with an example problem involving a cross between a dark grey rabbit and a light grey rabbit, demonstrating how to determine genotypic and phenotypic ratios.

What is the definition of multiple alleles?

• A single form of a gene at different loci

• Three or more alternate forms of a gene at the same locus

• Two forms of a gene at the same locus

• Two or more forms of a gene at different loci

How many possible phenotypes exist for rabbit coat color?

• Six

• Three

• Four

• Five

Which rabbit coat color is dominant over all others?

• Dark Grey

• Albino

• Chinchilla

• Himalayan

Which allele is recessive in the rabbit coat color hierarchy?

• Lowercase CCH

• Lowercase C

• Capital C

• Lowercase CH

What is the genotype for a chinchilla rabbit?

• Capital C Capital C

• Lowercase CCH Lowercase CCH

• Lowercase CH Lowercase CH

• Lowercase C Lowercase C

Which genotype results in an albino rabbit?

• Capital C Lowercase C

• Lowercase C Lowercase C

• Lowercase CCH Lowercase C

• Lowercase CH Lowercase CH

Which genotype combination results in a light grey rabbit?

• Lowercase CCH Lowercase CH

• Capital C Lowercase C

• Lowercase CCH Lowercase C

• Lowercase CH Lowercase C

What phenotype results from crossing a chinchilla rabbit with a Himalayan rabbit?

• Chinchilla

• Albino

• Light Grey

• Dark Grey

What is the phenotypic ratio of the offspring from a dark grey and light grey rabbit cross?

• 1:1:1

• 2:1:1

• 3:1

• 1:2:1

What is the genotypic ratio of the offspring from the example problem?

• 1:1:1:1

• 3:1

• 2:1:1

• 1:2:1