Probability and Genetics Concepts

This lecture introduces basic probability concepts applied to genetics, focusing on the multiplication and addition rules. It explains how these rules are used in genetic scenarios, such as monohybrid crosses, and provides examples to illustrate their application. The lecture concludes with a discussion on phenotypic outcomes and a preview of more complex probability applications in future lectures.

What is the probability of rolling a 3 on a six-sided die?

• 1/2

• 1/3

• 1/4

• 1/6

If you roll a die twice, what is the probability of getting a 2 on the first roll and a 3 on the second?

• 1/12

• 1/36

• 1/18

• 1/6

Which rule is used when calculating the probability of multiple independent events occurring in sequence?

• Addition Rule

• Division Rule

• Subtraction Rule

• Multiplication Rule

Which rule would you use to find the probability of rolling either a 2 or a 3 on a single die roll?

• Multiplication Rule

• Addition Rule

• Subtraction Rule

• Division Rule

What is the probability of rolling either a 2 or a 3 on a six-sided die?

• 1/3

• 1/6

• 1/2

• 1/4

In a monohybrid cross involving albinism, what is the probability of a child being normal if the parents are carriers?

• 1/4

• 1/3

• 3/4

• 1/2

What is the probability of having a child who is either heterozygous or homozygous recessive for albinism?

• 1/3

• 1/2

• 1/4

• 3/4

In genetics, what does a heterozygous genotype mean?

• Two recessive alleles

• No alleles

• One dominant and one recessive allele

• Two dominant alleles

If a couple has three children, what is the probability that all three will be albino?

• 1/64

• 1/32

• 1/16

• 1/8

What is the probability of having the first child albino and the next two children with normal pigmentation?

• 9/64

• 3/16

• 1/8

• 1/4