Monohybrids and the Punnett Square Guinea Pigs

The video explores the genetics of hair in guinea pigs, focusing on the difference between dominant and recessive alleles. It explains how genotypes and phenotypes are determined, using hairless guinea pigs as an example. The video also covers the concept of monohybrid crosses and how to use Punnett squares to predict genetic outcomes. It emphasizes that these predictions are probabilities, not certainties, and concludes with a reminder of the excitement in studying biology.

What is the genetic makeup of a hairless guinea pig?

• Big H Little h

• Big H Big H or Big H Little h

• Big H Big H

• Little h Little h

Which of the following represents a dominant allele?

• A symbol

• A capital letter

• A lowercase letter

• A number

What does the term 'homozygous' mean?

• Having one allele

• Having no alleles

• Having two identical alleles

• Having two different alleles

If a guinea pig has hair, which genotype could it possibly have?

• Little h Little h

• Big H Big H

• Both Big H Big H and Big H Little h

• Big H Little h

What is the purpose of a Punnett square?

• To identify the gender of offspring

• To predict the probability of traits in offspring

• To calculate the age of offspring

• To determine the exact traits of offspring

In a monohybrid cross of two heterozygous guinea pigs, what is the expected phenotype ratio?

• 4:0

• 1:1

• 2:2

• 3:1

What does a phenotype describe?

• The age of an organism

• The physical traits of an organism

• The diet of an organism

• The genetic makeup of an organism