Understanding Dominant and Recessive Alleles

The video tutorial explains the concept of dominant and recessive alleles. It begins with an introduction to alleles, highlighting that every organism has at least two alleles for each gene. The tutorial then describes the dominant-recessive relationship, where the dominant allele is expressed over the recessive one. An example using cat fur color is provided, illustrating how different allele pairings result in different fur colors. The video concludes with a brief mention of upcoming topics like homozygous and heterozygous alleles.

What is the main topic discussed in the video?

• The structure of DNA

• The theory of evolution

• Dominant and recessive alleles

• The process of photosynthesis

How many alleles does an organism have for each gene?

• Three

• Two

• One

• Four

What does an uppercase letter represent in allele notation?

• An unknown allele

• A neutral allele

• A dominant allele

• A recessive allele

What is the purpose of using letters to represent alleles?

• To make it more complex

• To easily distinguish between dominant and recessive alleles

• To confuse students

• To follow a tradition

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

• White

• Black

• Gray

• Orange

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

• Black

• Orange

• White

• Gray

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

• Orange

• Gray

• Black

• White

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

• Gray

• Orange

• White

• Black

What should you do if you have questions about the video content?

• Email the teacher

• Throw them in the comments

• Ask a friend

• Search online

What upcoming topics are mentioned at the end of the video?

• Genetic mutations

• Homozygous and heterozygous alleles

• Photosynthesis and cellular respiration

• Mitosis and meiosis