Sexual and Asexual Reproduction
Sexual reproduction requires two parents that form off-spring that will take and keep genetic information from each parent. Sexual reproduction uses meiosis, which is a single cell that divides two times to produce four cells that include some genetic information. These cells tell us specific information about our selves, what are hair colour is, what our gender is, or what our skin tone is. Sexual reproduction is mitosis times two, meaning there are twice the amount of stages in PMAT. Some advantages in sexual reproduction is that the off-spring takes genetic information from both parents, that makes them unique. There are higher chances of staying alive; in asexual reproduction, if one off-spring has an illness or disease they are all prone to get it as well, it can spread to all the others, in sexual reproduction it is not the case. Some disadvantages of sexual reproduction are finding a mate to reproduce with, fewer off-spring are produced, and bad genes are passed down to off-spring.
Asexual reproduction is a production that requires one parent to form off-spring that are copies of the parent cell. Asexual reproduction uses mitosis, mitosis is a type of cell division that ends in two daughter cells, which both have the same kinds of chromosomes as the parent. Asexual reproduction requires only one parent, and the off-spring will be an exact division of its parent, like a clone of the parent. Some advantages are that asexual reproduction doesn’t need any energy or time into finding a mate to reproduce, it does it by itself. In asexual reproduction, there are a large number off-spring that are produced. Disadvantages include no diversity in the off-spring, they are all the same. There are easily prone to extinction because if one off-spring has a weakness they all have the same weakness, they also do not work well environment changes.
Mitosis, Meiosis and their differences
Mitosis is a very simple process of copying a cell completely. It copy’s the genes and the daughter cells, the duplicated cell is an exact copy of the parent cell with all its genetic information. Meiosis is a similar process to mitosis because mitosis uses PMAT (prophase, metaphase, anaphase, and telophase) and meiosis uses PMAT, but times two, so it will be (prophase|, metaphase, anaphase|, telophase|, prophase||, metaphase||, anaphase||, then telophase||) . The difference between them is that each one has a reproduction process. Differences, meiosis does not produce copies of a cell, although the cell has similar genes, mitosis occurs in all organisms while meiosis only occurs in humans, animals, plants, and some fungi.
How Organisms Grow
A cell grows by taking in nutrients and taking up more space as they grow. An organism starts as one cell. There are different types of cell growth, like pollination where a yellow like substance discharges from a male plant to reproduce. Embryotic development is a quick stage that goes from one cell, to two, to four, to eight cells, and then the morula stage that finishes the cycle. Internal fertilization is when sperm cell is inside a female body where they meet an egg cell. There is mating and methods of fertilization where there are different times to mate, different kinds of mating, internal and external, and many condition that need to be met, like how the cell needs to get nutrients to grow.
http://www.ducksters.com/science/biology/cell_division.php
http://www.biology4kids.com/files/cell2_mitosis.html
Jayden Bawden