Having Six Fingers Is a Dominant Trait

The video explores the genetic condition polydactyly, often seen in Hemingway cats, and its relation to dominant alleles. It delves into cellular differentiation, the discovery of the hedgehog gene in fruit flies, and the role of the Sonic Hedgehog protein in development. The video explains how genetic mutations can lead to conditions like polydactyly and syndactyly, highlighting the complexity of gene expression and development.

What is the term used to describe the genetic condition of having extra fingers or toes?

• Hexadactyly

• Monodactyly

• Polydactyly

• Syndactyly

Which of the following species is NOT mentioned as being affected by polydactyly?

• Chickens

• Elephants

• Guinea pigs

• Dogs

What is the process called where a single cell develops into various body parts like arms and legs?

• Cell division

• Morphogenesis

• Genetic mutation

• Cellular differentiation

Which gene was discovered in fruit flies and is crucial for limb development?

• Morphogen

• Fly gene

• Hedgehog

• Sonic Hedgehog

What can result from an excess of Sonic Hedgehog signal in the wrong place?

• Syndactyly

• No effect

• Polydactyly

• Normal limb development