Cell division, asexual reproduction in meiosis part two Flashcards
A process in which one diploid cell divides and makes four haploid sex cells
Meiosis
How many interphases happen in the whole process of meiosis?
There is only one interphase in meiosis
How many daughter cells are produced in meiosis?
Four daughter cells are produced, and they are not identical to the parent or to each other
How do the daughter cells in meiosis compare to each other and the parent cell?
The parent cell is diploid, and the daughter cells are haploid
Are reproductive cells, haploid, or diploid cells?
Haploid
How many chromosomes are in a human sperm and egg cell?
A human egg contains 23 chromosomes in a human sperm cell contains 23 chromosomes
How many chromosomes are in a zygote once fertilization takes place?
A zygote has 46 chromosomes
What kind of cells undergo mitosis?
Body cells or somatic cells
What kind of cells undergo meiosis?
Reproductive cells (sperm and egg)
How are haploid and diploid cells different?
Haploid have half the number of chromosomes of diploid cells
Explain crossing over and during what phase of meiosis does it happen?
Prophase 1 – chromosomal segments are exchanged between the two homologous chromosomes
Why is meiosis important?
Produces four haploid cells that are not identical, ***increasing genetic variation
How many nuclear divisions, and how many cells are produced in meiosis?
Two nuclear divisions, and four haploid cells are produced
Pairs of chromosomes that have genes for the same traits are arranged in the same order
Homologous chromosome
In what phase of meiosis are homologous, chromosomes separated?
Anaphase II of meiosis
If 25 cells undergo meiosis, how many daughter cells will be produced?
100
Is the parent cell haploid or diploid at the start of meiosis?
Diploid
Are the daughter cells produced by meiosis, haploid, or diploid at the end of meiosis?
Haploid
A process in which an egg and sperm cell join
Fertilization
A new cell that forms from fertilization
Zygote
Type of reproduction in which the genetic materials from two different cells combine, producing offspring
Sexual reproduction
List five facts of meiosis
- sexual reproduction involves meiosis
- meiosis produces gametes 3. meiosis reduces the number of chromosomes in gametes
- one cell becomes for non-identical cells
- Two nuclear divisions
One nuclear division, two identical daughter cells, a form of asexual reproduction
Mitosis
Two nuclear divisions, for non-identical daughter cells, used for sexual reproduction
Meiosis
List three differences in mitosis and meiosis
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