Genetics Concepts and Inheritance Patterns

This video tutorial reviews key genetic inheritance patterns, including monohybrid and dihybrid inheritance, incomplete dominance, codominance, and X-linked disorders. It explains how traits are passed from parents to offspring, using examples like flower color and blood types to illustrate concepts such as dominant and recessive traits, Mendel's laws, and the independence of alleles. The tutorial also covers the genetic basis of X-linked disorders, highlighting the role of sex chromosomes in inheritance.

What is the process called where traits are passed from parents to offspring?

• Selection

• Mutation

• Inheritance

• Evolution

In a monohybrid cross, what is the result when a dominant allele is present?

• Both traits are mixed

• The recessive trait is expressed

• Neither trait is expressed

• The dominant trait is expressed

What pattern is observed in a dihybrid cross according to Mendel's experiments?

• 1:1

• 9:3:3:1

• 3:1

• 2:2

What does the law of independent assortment state?

• Alleles are dependent on each other

• Alleles are inherited together

• Alleles are inherited independently

• Alleles are always dominant

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

• No flowers

• Pink flowers

• White flowers

• Red flowers

In codominance, what happens when two different alleles are present?

• One allele is dominant

• Neither allele is expressed

• Both alleles are mixed

• Both alleles are expressed equally

Which blood type is an example of codominance?

• Type AB

• Type B

• Type A

• Type O

What is an example of an x-linked disorder?

• Cystic fibrosis

• Down syndrome

• Hemophilia

• Sickle cell anemia

What chromosomes are involved in x-linked disorders?

• Autosomes

• Y chromosomes

• X chromosomes

• Mitochondrial DNA

In x-linked disorders, why are males more frequently affected?

• They have no X chromosomes

• They have two Y chromosomes

• They have one X and one Y chromosome

• They have two X chromosomes