Dominant And Recessive Alleles In Genetics

The video tutorial explains the concept of dominant and recessive alleles, using cat fur color as an example. It begins with an introduction to alleles and their role in organisms, followed by a detailed explanation of how dominant and recessive alleles interact. The tutorial uses the example of cat fur color, where orange is dominant and gray is recessive, to illustrate these concepts. The video concludes with a preview of upcoming topics on homozygous and heterozygous alleles, as well as genotypes versus phenotypes.

What should you do if you don't remember what an allele is?

• Watch a video on genes versus alleles

• Watch a video on dominant alleles

• Ask a friend

• Read a book on genetics

How many alleles does an organism have for each gene?

• One

• Three

• Two

• Four

What does a dominant allele do in a gene pair?

• It is always silent

• It is never expressed

• It is expressed over the recessive allele

• It is expressed only if paired with another dominant allele

How are dominant alleles represented in genetic notation?

• With uppercase letters

• With numbers

• With symbols

• With lowercase letters

In the example of cat fur color, which color is dominant?

• Black

• Orange

• White

• Gray

What letter is used to represent the alleles for cat fur color in the example?

• C

• G

• H

• F

What is the fur color of a cat with one dominant and one recessive allele?

• White

• Gray

• Black

• Orange

What is the fur color of a cat with two recessive alleles?

• White

• Black

• Orange

• Gray

What should you do if you have questions about dominant and recessive alleles?

• Search online

• Ask a friend

• Ignore them

• Throw them in the comments

What topics are mentioned as upcoming in the video?

• Cell division

• DNA replication

• Mendelian genetics

• Homozygous and heterozygous alleles