Meiosis and Cell Reproduction

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App

Questions and Answers

What is a cell with two of each kind of chromosome called?

diploid

What are sperm and egg cells also known as?

gametes

What are chromosomes called when they have the same genes for the same traits in the same order on both chromosomes?

homologous

What is the process called when parent cells make gametes?

<p>meiosis</p> Signup and view all the answers

What is it called when non-sister chromatids exchange genes?

<p>crossing over</p> Signup and view all the answers

What is the cell created when a sperm enters an egg called?

<p>zygote</p> Signup and view all the answers

What are all cells besides sperm and egg called?

<p>somatic cells/body cells</p> Signup and view all the answers

What is the process of joining a sperm cell with an egg cell called?

<p>fertilization</p> Signup and view all the answers

What is the number of diploid chromosomes in humans?

<p>46</p> Signup and view all the answers

Would egg and/or sperm cells be considered haploid or diploid?

<p>haploid (A)</p> Signup and view all the answers

Would somatic (hair, skin, muscle) cells be considered haploid or diploid?

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

Is the chromosome number related to the complexity of the organism?

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

When does the process of crossing over occur?

<p>when meiosis occurs in pro-phase</p> Signup and view all the answers

How many daughter cells are created at the end of meiosis 1?

<p>two</p> Signup and view all the answers

How many daughter cells are created at the end of meiosis 2? Are these considered haploid or diploid?

<p>four / considered haploid</p> Signup and view all the answers

In humans, how many chromosomes are present in each cell at the end of meiosis 1?

<p>46</p> Signup and view all the answers

What is the importance outcome of meiosis 1?

<p>crossing over</p> Signup and view all the answers

Why is meiosis important and list two reasons

<p>produces 4 haploid daughter cells = not identical / results in genetic variation</p> Signup and view all the answers

In what two ways does meiosis provide genetic variation? Explain how each provides genetic variety

<p>crossing over and fertilization which increases genetic variation</p> Signup and view all the answers

No pairing of homologs occur

<p>meiosis</p> Signup and view all the answers

Two divisions

<p>meiosis</p> Signup and view all the answers

Four daughter cells are produces

<p>meiosis</p> Signup and view all the answers

Associated with growth and asexual reproduction

<p>mitosis</p> Signup and view all the answers

Associated with sexual reproduction

<p>meiosis</p> Signup and view all the answers

Involves duplication of chromosomes

<p>mitosis and meiosis</p> Signup and view all the answers

Chromosome number is maintained

<p>mitosis</p> Signup and view all the answers

Chromosome number is halved

<p>meiosis</p> Signup and view all the answers

Crossing over between homologous chromosomes may occur

<p>meiosis</p> Signup and view all the answers

Daughter cells are identical to parent cell

<p>mitosis</p> Signup and view all the answers

Produces gamates

<p>meiosis</p> Signup and view all the answers

A synapsis occurs in pro-phase

<p>mitosis</p> Signup and view all the answers

What term describes a cell with two of each kind of chromosome?

<p>diploid</p> Signup and view all the answers

What are sperm or egg cells called?

<p>gametes</p> Signup and view all the answers

What term describes when chromosomes have the same genes for the same traits in the same order on both chromosomes?

<p>homologous</p> Signup and view all the answers

Parent cells make gametes in a process called what?

<p>meiosis</p> Signup and view all the answers

What process does not involve pairing of homologs?

<p>meiosis</p> Signup and view all the answers

What cell division process has two divisions?

<p>meiosis</p> Signup and view all the answers

What process produces four daughter cells?

<p>meiosis</p> Signup and view all the answers

What process is associated with growth and asexual reproduction?

<p>mitosis</p> Signup and view all the answers

What process is associated with sexual reproduction?

<p>meiosis</p> Signup and view all the answers

What cell division process only has one division?

<p>mitosis</p> Signup and view all the answers

What cell division process involves duplication of chromosomes?

<p>mitosis and meiosis</p> Signup and view all the answers

In what process is the chromosome number maintained?

<p>mitosis</p> Signup and view all the answers

In what cell division process is the chromosome number halved?

<p>meiosis</p> Signup and view all the answers

In what process does crossing over between homologous chromosomes occur?

<p>meiosis</p> Signup and view all the answers

In what type of cell division are the daughter cells identical to the parent cell?

<p>mitosis</p> Signup and view all the answers

What cell division process produces gametes?

<p>meiosis</p> Signup and view all the answers

In what cell division does a synapsis occur in pro-phase?

<p>mitosis</p> Signup and view all the answers

True or false: Homologous chromosomes have the same genes for the same traits in the same order on both chromosomes.

<p>True (A)</p> Signup and view all the answers

What cell is created when a sperm enters an egg?

<p>zygote</p> Signup and view all the answers

What is the process of joining a sperm cell with an egg cell?

<p>fertilization</p> Signup and view all the answers

True or false: Egg and/or sperm cells are considered haploid.

<p>True (A)</p> Signup and view all the answers

True or false: Somatic (hair, skin, muscle) cells are considered haploid.

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

True or false: The chromosome number is related to the complexity of the organism?

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

No pairing of homologs occur in what process?

<p>mitosis</p> Signup and view all the answers

What type of cell division has two divisions?

<p>meiosis</p> Signup and view all the answers

What type of cell division produces four daughter cells?

<p>meiosis</p> Signup and view all the answers

What type of cell process is associated with growth and asexual reproduction?

<p>mitosis</p> Signup and view all the answers

What type of cell process is associated with sexual reproduction?

<p>meiosis</p> Signup and view all the answers

What type of cell process involves duplication of chromosomes?

<p>mitosis and meiosis</p> Signup and view all the answers

In what type of cell division is the chromosome number maintained?

<p>mitosis</p> Signup and view all the answers

In what type of cell division is the chromosome number halved?

<p>meiosis</p> Signup and view all the answers

True or false: Crossing over between homologous chromosomes may occur in mitosis.

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

In what type of cell division are the daughter cells not identical to parent cell?

<p>meiosis</p> Signup and view all the answers

What produces gametes?

<p>meiosis</p> Signup and view all the answers

True or False: A synapsis occurs in pro-phase of mitosis.

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

Flashcards

Diploid

A cell containing two sets of chromosomes.

Haploid

A cell containing one set of chromosomes.

Gametes

Reproductive cells (sperm or egg) with a haploid number of chromosomes.

Homologous Chromosomes

Chromosomes that have the same genes in the same order.

Signup and view all the flashcards

Meiosis

Cell division process that creates gametes.

Signup and view all the flashcards

Crossing Over

Exchange of genetic material between non-sister chromatids during meiosis.

Signup and view all the flashcards

Zygote

A diploid cell resulting from the fusion of two haploid gametes.

Signup and view all the flashcards

Somatic cell

Any biological cell forming the body of a multicellular organism other than gametes, germ cells, gametocytes or undifferentiated stem cells.

Signup and view all the flashcards

Fertilization

The fusion of a sperm and egg cell to produce a zygote.

Signup and view all the flashcards

Human Diploid Chromosome Number

The total number of chromosomes in a diploid human cell.

Signup and view all the flashcards

Human Haploid Chromosome Number

The number of chromosomes in a human haploid cell (gamete).

Signup and view all the flashcards

Are gametes haploid or diploid?

If there is one of each kind of chromosome (not pairs)

Signup and view all the flashcards

Are somatic cells haploid or diploid?

Having homologous pairs of chromosomes

Signup and view all the flashcards

Chromosome number vs complexity?

An organisms complexity does not determine chromosome number.

Signup and view all the flashcards

When does crossing over occur?

Occurs during prophase I of meiosis I.

Signup and view all the flashcards

Meiosis I daughter cells

Two.

Signup and view all the flashcards

Meiosis II daughter cells

Four haploid cells.

Signup and view all the flashcards

Chromosomes after Meiosis I

46 (duplicated) chromosomes.

Signup and view all the flashcards

Importance of Meiosis I outcome

Increases genetic variation through recombination.

Signup and view all the flashcards

Importance of Meiosis II outcome

Production of four haploid cells.

Signup and view all the flashcards

Why is meiosis important?

Produces genetically diverse gametes, reduces chromosome number.

Signup and view all the flashcards

Genetic variation in meiosis

Crossing over and random fertilization.

Signup and view all the flashcards

No homologous pairing

Meiosis

Signup and view all the flashcards

Two Divisions

Meiosis

Signup and view all the flashcards

Four cells

Meiosis

Signup and view all the flashcards

Growth and Reproduction

Mitosis

Signup and view all the flashcards

Sexual Reproduction

Meiosis

Signup and view all the flashcards

One Division

Mitosis

Signup and view all the flashcards

Two Cells

Mitosis

Signup and view all the flashcards

Chromosome Duplication

Both mitosis and meiosis

Signup and view all the flashcards

Chromosome Count is Maintained

Mitosis

Signup and view all the flashcards

Count is cut in half

Meiosis

Signup and view all the flashcards

Crossover

Meiosis

Signup and view all the flashcards

Identical

Mitosis

Signup and view all the flashcards

Non Identical

Meiosis

Signup and view all the flashcards

Gametes

Meiosis

Signup and view all the flashcards

Synapsis in Prophase

Mitosis

Signup and view all the flashcards

Study Notes

  • A diploid cell contains two of each kind of chromosome.
  • A haploid cell contains one of each kind of chromosome.
  • Gametes are sperm or egg cells.
  • Homologous chromosomes have the same genes for the same traits in the same order.
  • Parent cells create gametes through meiosis.
  • Crossing over is the exchange of genes by non-sister chromatids.
  • A zygote is created when a sperm fertilizes an egg.
  • Somatic cells, also known as body cells, include all cells besides sperm and egg cells.
  • Fertilization is the process of a sperm cell joining with an egg cell.
  • Humans have 46 diploid chromosomes.
  • Humans have 23 haploid chromosomes.
  • Egg and sperm cells are considered haploid.
  • Somatic cells are considered diploid.
  • The chromosome number is not related to the complexity of an organism.
  • Crossing over occurs during prophase in meiosis.
  • Two daughter cells are created at the end of meiosis 1.
  • Four daughter cells are created at the end of meiosis 2, and these are considered haploid.
  • In humans, each cell contains 46 chromosomes at the end of meiosis 1.
  • The important outcome of meiosis 1 is crossing over.
  • The important outcome of meiosis 2 is four haploid cells.
  • Meiosis results in genetic variation and produces four haploid daughter cells, and it consists of two sets of division.
  • Meiosis provides genetic variation through crossing over and fertilization.

Meiosis vs Mitosis

  • No pairing of homologs occurs in mitosis.
  • Meiosis involves two divisions.
  • Meiosis produces four daughter cells.
  • Mitosis is associated with growth and asexual reproduction.
  • Meiosis is associated with sexual reproduction.
  • Mitosis involves one division.
  • Mitosis produces two daughter cells.
  • Both mitosis and meiosis involve duplication of chromosomes.
  • Chromosome number is maintained in mitosis.
  • Chromosome number is halved in meiosis.
  • Crossing over between homologous chromosomes may occur in meiosis.
  • Daughter cells are identical to the parent cell in mitosis.
  • Daughter cells are not identical to the parent cell in meiosis.
  • Meiosis produces gametes.
  • Synapsis occurs in pro-phase of mitosis.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

More Like This

Cell Biology Meiosis Overview
8 questions
Botany • ch2 • Meiosis
23 questions
Biology Quiz on Spores and Meiosis
25 questions
Use Quizgecko on...
Browser
Browser