Genetics of Inheritance Patterns

The video tutorial covers various genetic concepts beyond simple dominant and recessive alleles. It introduces incomplete dominance, where alleles blend to create intermediate phenotypes, and codominance, where both alleles are fully expressed, as seen in Appaloosa horses. The concept of multiple alleles is explained using rabbit coat colors, highlighting how more than two alleles can exist in a population. Finally, polygenic traits are discussed, illustrating how multiple genes contribute to a wide range of phenotypes, such as human skin color.

What is the result of crossing a red flower with a white flower under incomplete dominance?

• Red flower

• White flower

• Pink flower

• Striped flower

In incomplete dominance, what is the phenotype of a heterozygous organism?

• No phenotype

• Intermediate phenotype

• Recessive phenotype

• Dominant phenotype

What is the phenotype of a horse with codominant gray and white alleles?

• Gray with white spots

• White with gray spots

• Completely white

• Completely gray

In codominance, how are the alleles expressed in the phenotype?

• Only the dominant allele is expressed

• Only the recessive allele is expressed

• Both alleles are partially expressed

• Both alleles are fully expressed

What does the presence of multiple alleles in a population mean?

• More than two alleles exist

• Alleles are identical

• Alleles are recessive

• Only two alleles exist

Which allele is dominant in rabbit coat color genetics?

• Full color

• Albino

• Himalayan

• Chinchilla

What is the phenotype of a rabbit with a Himalayan and albino allele?

• Albino

• Himalayan

• Chinchilla

• Full color

How are polygenic traits controlled?

• By a single gene

• By two genes

• By no genes

• By multiple genes

What is an example of a polygenic trait in humans?

• Eye color

• Blood type

• Hair type

• Skin color

What does the term 'polygenic' mean?

• Two genes

• Single gene

• Many genes

• No genes