Genetics of Cat Hair Traits

This video tutorial explains how to use a Punnett square to predict the genetic outcomes of a cross between heterozygous short-haired cats. It covers the concepts of dominant and recessive alleles, genotypes of parents, and how to determine the possible genotypes and phenotypes of offspring. The tutorial also discusses the phenotypic and genotypic ratios resulting from the cross, providing a clear example of a simple genetic trait inheritance.

What is the dominant trait in the cat hair example discussed in the video?

• Short hair

• Curly hair

• Long hair

• No hair

What does it mean for a cat to be heterozygous for a trait?

• It has two identical alleles for a trait.

• It has no alleles for a trait.

• It has two recessive alleles for a trait.

• It has one dominant and one recessive allele for a trait.

What is the genotype of a heterozygous short-haired cat?

• hH

• Hh

• hh

• HH

When setting up a Punnett square, where do you place the genotype of one parent?

• On the top of the square

• On the bottom of the square

• Outside the square

• In the center of the square

What is the expected phenotypic ratio for short-haired offspring in this genetic cross?

• 100%

• 50%

• 75%

• 25%

How many of the four possible offspring genotypes will express the recessive trait?

• One

• Two

• None

• Three

What is the probability of an offspring being homozygous dominant?

• 0%

• 75%

• 25%

• 50%

What is the genotypic ratio for heterozygous offspring in this cross?

• 2:1:1

• 2:2:0

• 1:2:1

• 1:1:2

What percentage of the offspring are expected to be homozygous recessive?

• 25%

• 50%

• 75%

• 0%

Which of the following is a correct representation of a homozygous recessive genotype?

• hH

• HH

• hh

• Hh