Exploring Patterns of Inheritance in Genetics

Mr. Furlong introduces various patterns of genetic inheritance beyond dominant and recessive genes. He explains incomplete dominance using flower color as an example, where neither gene is completely dominant, resulting in a blend. Co-dominance is discussed with examples like chickens and human blood types, where both alleles are fully expressed. The concept of multiple alleles is explored, particularly in human blood types, which involve more than two alleles. Finally, X-linked traits are covered, focusing on how they are inherited differently in males and females, using color blindness as an example.

What is the main focus of the video tutorial?

• Patterns of inheritance beyond dominant and recessive genes

• The structure of DNA

• The function of RNA

• The process of natural selection

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

• A red flower

• A pink flower

• A yellow flower

• A white flower

What is the phenotypic ratio when crossing two pink flowers in incomplete dominance?

• 1 pink: 3 white

• 4 pink

• 2 red: 2 white

• 1 red: 2 pink: 1 white

In co-dominance, what is the result when a black feathered chicken is crossed with a white feathered chicken?

• Chickens with both black and white feathers

• All white feathered chickens

• Chickens with gray feathers

• All black feathered chickens

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What is the genotypic ratio when crossing two heterozygous chickens in co-dominance?

• 1 BB: 3 WW

• 2 BB: 2 WW

• 1 BB: 2 BW: 1 WW

• 4 BW

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Which blood type is an example of a multiple allele trait?

• Type AB

• Type O

• Type B

• Type A

What is the chance of having a type O child if one parent is AO and the other is BO?

• 75%

• 50%

• 0%

• 25%

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What determines gender in humans?

• The size of the chromosomes

• The presence of X and Y chromosomes

• The number of chromosomes

• The shape of the chromosomes

Why are X-linked traits more commonly expressed in males?

• Males have more dominant genes

• Males have no X chromosomes

• Males have only one X chromosome

• Males have two X chromosomes

If a woman with normal color vision marries a colorblind man, what is the chance of having a colorblind child?

• 25%

• 75%

• 0%

• 50%

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