Alternate Genetic Crosses

The video tutorial explores genetic inheritance, focusing on complex patterns like incomplete dominance, codominance, and multiple alleles. It explains how traits are passed down, using examples like snapdragons and human blood types. The video also touches on polygenetic traits, emphasizing the complexity of genetic inheritance beyond simple dominant-recessive patterns.

What does complete dominance mean in genetic inheritance?

• Both alleles are expressed equally.

• Multiple alleles are involved in the trait.

• Traits are inherited in a blended manner.

• The recessive allele is masked by the dominant allele.

In incomplete dominance, what is the result of crossing a red and a white snapdragon?

• Offspring are red and white striped.

• All offspring are pink.

• All offspring are white.

• All offspring are red.

What is the genotype of a person with wavy hair, given incomplete dominance?

• Two curly hair alleles

• One wavy and one curly hair allele

• Two straight hair alleles

• One straight and one curly hair allele

In codominance, what would be the phenotype of a heterozygous snapdragon?

• Red

• White

• Red and white striped

• Pink

Which blood type is an example of codominance?

• Type A

• Type B

• Type AB

• Type O

If a person has the genotype AO for blood type, what is their phenotype?

• Type A

• Type B

• Type AB

• Type O

Which of the following is an example of a polygenetic trait?

• Blood type

• Snapdragon flower color

• Sickle cell anemia

• Eye color