Sled Dog Genetics Lesson Plan And Worksheet (Page 3 of 5) in pdf

Sled Dog Genetics Lesson Plan And Worksheet Page 3

Sleddog Genetics Worksheet

Scientists in Alaska have been trying to determine the genetic make-up of a great sled dog. These

dogs are called Alaskan Huskies by the locals and are not recognized as an official breed.

Scientists have noticed some physical characteristics that have shown up in dogs that are top sled

runners. Use the information provided and your knowledge of genetics to answer each question.

CHARACTERISTICS INFORMATION

Grey fur color is dominate over black. (G, g)

Bushy tail hair is dominate to non bushy tail hair. (B, b)

Long hair coat is dominate to short hair coat. (L, l)

1. For each genotype below, indicate whether it is a heterozygous (He) or a homozygous (Ho).

LL____ Ll____ ll____ BB____ Bb____ bb___ GG___ Gg____ gg____

Which genotypes in #1 would be considered purebred? ________________

Which genotypes in #1 would be considered hybrids? _________________

2. Determine the phenotype for each genotype using the information provided about the Alaskan

Huskies.

Bushy tail hair is dominate to non bushy tail hair.

BB________ Bb_________ bb___________

Long hair coat is dominate to short hair coat.

LL__________ Ll ________ ll _________

3. For phenotype, give the 4 genotypes possible for a sled dog named Trouble. Trouble has grey

fur, a bushy tail, and a short hair coat.

Grey fur color is dominate over black. (G, g)

Bushy tail hair is dominate to non bushy tail hair. (B, b)

Long hair coat is dominate to short hair coat. (L, l)

4. Trouble’s owners have decided to let her have puppies because she is such a great runner.

They have chosen the father of the puppies to be Cello because he is such a good swing dog.

Sled Dog Genetics Lesson Plan And Worksheet Page 3