Shelf by Zenab Zenabo

khurkley2026 — 2024-11-18 03:39:55 UTC

Mitosis is a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.

Simply Psychology. (2024, July 16). Nature vs. Nurture in Psychology. https://www.simplypsychology.org/naturevsnurture.html

Interphase

khurkley2026 — 2024-11-18 03:43:06 UTC

The DNA in the cell is copied in preparation for cell division.

In which part of the cell cycle does DNA replication occur? (n.d.). Quora. https://www.quora.com/In-which-part-of-the-cell-cycle-does-DNA-replication-occur

Prophase

khurkley2026 — 2024-11-18 03:44:46 UTC

The chromosomes condense and become visible. The nuclear envelope breaks down.

Stanley, J. (2017, September 10). (a) Prophase: (1) Chromosomes condense and become visible; Ppt Video Online Download. https://slideplayer.com/slide/273111/

Metaphase

khurkley2026 — 2024-11-18 03:46:32 UTC

The chromosomes line up in the middle of the cell.

Anaphase

khurkley2026 — 2024-11-18 03:48:37 UTC

The chromosomes separate and move to opposite ends of the cell.

https://quizlet.com/188611233/the-cell-cycle-mitosis-meiosis-flash-cards/

Telophase and Cytokinesis

khurkley2026 — 2024-11-18 03:50:00 UTC

The cell splits into two, each with an identical set of chromosomes.(Swords, 2021b)

Swords, C., PhD. (2021b, January 29). Mitosis – When a cell divides in two. Nebula Genomics Blog. https://nebula.org/blog/mitosis-cell-division/

khurkley2026 — 2024-11-18 03:52:28 UTC

Meiosis, on the other hand, is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction. Which phase of meiosis is different from mitosis? How? (n.d.). Quora. https://www.quora.com/Which-phase-of-meiosis-is-different-from-mitosis-How

Interphase:

khurkley2026 — 2024-11-18 03:53:47 UTC

The DNA in the cell is copied in preparation for cell division.

Resources. (2020, October 26). University of Leicester. https://le.ac.uk/vgec/topics/cell-cycle/the-cell-cycle-schools-and-colleges

Meiosis I

khurkley2026 — 2024-11-18 03:54:40 UTC

The cell undergoes a round of cell division (including Prophase I, Metaphase I, Anaphase I, Telophase I), but instead of separating sister chromatids (like in mitosis), homologous chromosomes are separated.

https://quizlet.com/694511609/usf-bsc-2210-cell-cycle-mitosis-and-meiosis-flash-cards/

Meiosis II

khurkley2026 — 2024-11-18 03:55:38 UTC

The cell undergoes a second round of cell division (including Prophase II, Metaphase II, Anaphase II, Telophase II), similar to mitosis, where sister chromatids are separated.

This results in four daughter cells, each with half the number of chromosomes as the parent cell.

Molnar, C., & Gair, J. (2015, May 14). 6.2 the cell cycle. Pressbooks. https://opentextbc.ca/biology/chapter/6-2-the-cell-cycle/

Key differences

khurkley2026 — 2024-11-18 03:57:24 UTC

-Produces 2 daughter cells.

-Daughter cells are genetically identical to parent.

-Each daughter cell has the same number of chromosomes as the parent.(Genetics of Reproduction, n.d.)

Genetics of reproduction. (n.d.). SCIENTIST CINDY. https://www.scientistcindy.com/genetics-of-reproduction.html

Key Differences

khurkley2026 — 2024-11-18 03:58:59 UTC

Produces 4 daughter cells.

Daughter cells are genetically unique.

Each daughter cell has half the number of chromosomes as the parent.

Generation of Variation and Mendel's Law.

khurkley2026 — 2024-11-18 03:59:22 UTC

The behavior of chromosomes during meiosis generates variation in several ways:

Crossing Over: During Prophase I of meiosis, homologous chromosomes pair up and exchange segments of DNA in a process called crossing over. This results in new combinations of genes on each chromosome.
Independent Assortment: During Metaphase I, the way in which the pairs of homologous chromosomes line up is random. This means that the combination of chromosomes that ends up in each gamete is also random.

This explains Mendel's law of independent assortment, which states that the alleles for different traits segregate, or separate, independently of one another during the formation of gametes. This is because the orientation of each pair of homologous chromosomes is random during Metaphase I, leading to the independent assortment of the chromosomes (and therefore the genes).(10.1 Meiosis | BioNinja, n.d.)

10.1 Meiosis | BioNinja. (n.d.). https://ib.bioninja.com.au/higher-level/topic-10-genetics/101-meiosis.html