Biology: Meiosis Overview and Comparison with Mitosis

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

During meiosis, what is the final ploidy of the resulting cells?

Diploid (2 sets of chromosomes)
Triploid (3 sets of chromosomes)
Haploid (1 set of chromosomes) (correct)
Tetraploid (4 sets of chromosomes)

What is the main difference between mitosis and meiosis in terms of chromosome separation?

Both homologous chromosomes and sisters separate in mitosis
Homologous chromosomes separate in meiosis, sisters separate in mitosis (correct)
Sisters separate in meiosis, homologous chromosomes separate in mitosis
Both homologous chromosomes and sisters separate in meiosis

What is the significance of crossing over in meiosis?

It leads to the production of genetically identical gametes
It ensures the formation of diploid cells
It prevents the separation of sister chromatids
It increases genetic variation by exchanging DNA between homologous chromosomes (correct)

What occurs during Prophase I of meiosis that distinguishes it from Prophase of mitosis?

<p>Synapsis and crossing over between homologous chromosomes (B)</p> Signup and view all the answers

What contributes to genetic variation during meiosis besides independent assortment of chromosomes?

<p>Random fertilization (B)</p> Signup and view all the answers

Flashcards

What is a haploid cell?

A cell with only one set of chromosomes.

What is crossing over?

Homologous chromosomes pair up and exchange genetic material.

What is a key difference between meiosis and mitosis?

The process where homologous chromosomes separate during meiosis, resulting in two daughter cells with half the number of chromosomes as the parent cell.

What is independent assortment of chromosomes?

A process that introduces genetic variation during meiosis I, where homologous chromosomes randomly align at the metaphase plate, leading to different combinations of chromosomes in the daughter cells.

Signup and view all the flashcards

What is random fertilization?

This process contributes to genetic variation during sexual reproduction by randomly combining chromosomes from both parents, creating unique combinations.

Signup and view all the flashcards