what percentage of dna is passed to the offspring in asexual reproduction

2.36: Asexual vs. Sexual Reproduction

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One parent or two?

That is the main difference between sexual and asexual reproduction. Sexual reproduction only means combining genetic cloth from two parents. Asexual reproduction produces offspring genetically identical to the one parent.

Reproduction: Asexual vs. Sexual

Prison cell sectionalization is how organisms abound and repair themselves. It is also how many organisms produce offspring. For many single-celled organisms, reproduction is a similar process. The parent cell simply divides to form two daughter cells that are identical to the parent. In many other organisms, 2 parents are involved, and the offspring are not identical to the parents. In fact, each offspring is unique. Look at the family in Effigy below. The children resemble their parents, but they are not identical to them. Instead, each has a unique combination of characteristics inherited from both parents.

Family Portrait: Mother, Girl, Male parent, and Son. Children resemble their parents, but they are never identical to them. Practise yous know why this is the case?

Reproduction is the procedure past which organisms requite rise to offspring. It is i of the defining characteristics of living things. In that location are ii basic types of reproduction: asexual reproduction and sexual reproduction.

Asexual Reproduction

Asexual reproduction involves a single parent. It results in offspring that are genetically identical to each other and to the parent. All prokaryotes and some eukaryotes reproduce this way. There are several different methods of asexual reproduction. They include binary fission, fragmentation, and budding.

• Binary fission occurs when a parent cell splits into two identical daughter cells of the same size.
• Fragmentation occurs when a parent organism breaks into fragments, or pieces, and each fragment develops into a new organism. Starfish, like the i in Figure below, reproduce this way. A new starfish tin can develop from a single ray, or arm. Starfish, however, are besides capable of sexual reproduction.
• Budding occurs when a parent jail cell forms a bubble-similar bud. The bud stays attached to the parent cell while information technology grows and develops. When the bud is fully developed, it breaks away from the parent cell and forms a new organism. Budding in yeast is shown in Effigy below.

Binary Fission in diverse single-celled organisms (left). Cell partitioning is a relatively simple process in many single-celled organisms. Somewhen the parent cell will compression apart to class two identical girl cells. In multiple fission (right), a multinucleated jail cell can divide to form more than one daughter cell. Multiple fission is more often observed among protists.

Starfish reproduce by fragmentation and yeasts reproduce by budding. Both are types of asexual reproduction.

Asexual reproduction tin can be very rapid. This is an advantage for many organisms. It allows them to crowd out other organisms that reproduce more than slowly. Bacteria, for case, may divide several times per hour. Under platonic conditions, 100 leaner tin can divide to produce millions of bacterial cells in but a few hours! However, well-nigh leaner practise not live under ideal conditions. If they did, the unabridged surface of the planet would presently be covered with them. Instead, their reproduction is kept in check by limited resources, predators, and their own wastes. This is true of most other organisms besides.

Sexual Reproduction

Sexual reproduction involves two parents. As y'all can see from Effigy below, in sexual reproduction, parents produce reproductive cells—called gametes—that unite to form an offspring. Gametes are haploid cells. This ways they comprise only half the number ofchromosomes found in other cells of the organism. Gametes are produced by a type of cell division called meiosis, which is described in detail in a subsequent concept. The process in which two gametes unite is called fertilization. The fertilized cell that results is referred to as a zygote. A zygote is diploid cell, which ways that information technology has twice the number of chromosomesas a gamete.

Mitosis, Meiosis and Sexual Reproduction is discussed at http://www.youtube.com/watch?v=kaSIjIzAtYA.

Bicycle of Sexual Reproduction. Sexual reproduction involves the production of haploid gametes by meiosis. This is followed past fertilization and the germination of a diploid zygote. The number of chromosomes in a gamete is represented by the letter n. Why does the zygote have 2n, or twice equally many, chromosomes?

Summary

• Asexual reproduction involves i parent and produces offspring that are genetically identical to each other and to the parent.
• Sexual reproduction involves ii parents and produces offspring that are genetically unique.
• During sexual reproduction, 2 haploid gametes join in the process of fertilization to produce a diploid zygote.
• Meiosis is the type of jail cell sectionalization that produces gametes.

Explore More

Use this resources to answer the questions that follow.

• Sexual vs. Asexual Reproduction at http://learn.genetics.utah.edu/content/variation/reproduction/.

1. How do the offspring of asexual reproduction compare to the parent?
2. How do the offspring of sexual reproduction compare to the parents?
3. How practise the following organism reproduce?
   1. brittle stars
   2. Salmonella
   3. cactus
   4. sunflower
   5. garden strawberry
   6. coast redwood tree
   7. grizzly behave

Review

1. What are three types of asexual reproduction?
2. Define gamete and zygote. What number of chromosomes does each have (in humans)?
3. What happens during fertilization?
4. Compare and contrast asexual and sexual reproduction.

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Source: https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Book:_Introductory_Biology_%28CK-12%29/02:_Cell_Biology/2.36:_Asexual_vs._Sexual_Reproduction

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