Alteration of Chromosome Number and Structure

The video explores chromosomes, focusing on errors in meiosis leading to aneuploidy and polyploidy. It explains nondisjunction, resulting in genetic disorders like Down syndrome, and discusses polyploidy in plants and animals. Structural changes in chromosomes, such as deletions and translocations, are also covered.

What is the primary reason all cells in the body have the same genetic material?

• Translocation

• Mutation

• Meiosis

• Mitosis

What is the result of nondisjunction during meiosis?

• Polyploidy

• Aneuploidy

• Inversion

• Translocation

Which condition is characterized by an extra X chromosome in males?

• Klinefelter syndrome

• Trisomy 21

• Turner syndrome

• Down syndrome

What term describes organisms with more than two complete sets of chromosomes?

• Aneuploidy

• Polyploidy

• Monosomy

• Trisomy

Which of the following is an example of a polyploid plant?

• Cat

• Human

• Dog

• Banana

What structural change involves a chromosome fragment attaching to a non-homologous chromosome?

• Inversion

• Translocation

• Duplication

• Deletion

What can result from unequal crossing over during meiosis?

• Polyploidy

• Deletion and duplication

• Aneuploidy

• Inversion