Exploring Incomplete Dominance and Blood Types

The video tutorial covers part 4 of meiosis genetics, focusing on incomplete dominance, codominance, and multiple alleles. It explains incomplete dominance with a flower color example, where red and white flowers produce pink offspring. Codominance is illustrated using cattle, where red and white cattle produce roan offspring. Finally, the concept of multiple alleles is discussed using blood types, showing how different combinations of A, B, and O alleles result in various blood types.

What is the main focus of today's lesson?

• Cell Division

• Photosynthesis

• Meiosis Genetics Part 4

• Mitosis

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In incomplete dominance, what is the result when a red flower is crossed with a white flower?

• Pink flower

• White flower

• Blue flower

• Red flower

Which of the following best describes incomplete dominance?

• Alleles are expressed in different cells

• Neither allele is completely expressed, resulting in a blend

• Both alleles are equally expressed

• One allele is completely dominant over the other

What is the key difference between incomplete dominance and codominance?

• Incomplete dominance involves only one allele, while codominance involves two

• Incomplete dominance results in both traits being expressed together, while codominance results in a blend

• Incomplete dominance results in a blend, while codominance results in both traits being expressed together

• Incomplete dominance occurs in animals, while codominance occurs in plants

In codominance, what is the phenotype of the offspring when red cattle are crossed with white cattle?

• Red cattle

• White cattle

• Roan cattle

• Black cattle

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What is the term used to describe the situation where both alleles are expressed together in codominance?

• Recessive alleles

• Codominance

• Multiple alleles

• Incomplete dominance

What is the key feature of multiple alleles?

• Alleles are expressed in different cells

• There are only two alleles for a gene

• There are more than two alleles for a gene

• One allele is always dominant

Which blood type is considered the ultimate recessive allele?

• Type O

• Type A

• Type B

• Type AB

What are the possible blood types of the offspring if one parent is heterozygous for type A and the other is heterozygous for type B?

• Only type A and type B

• Only type A and type O

• Only type AB and type O

• Type A, type B, type AB, and type O

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What is the probability of each blood type in the offspring of a heterozygous type A and heterozygous type B cross?

• 50% for each type

• 25% for each type

• 75% for each type

• 100% for each type

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