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How does meiosis maintain a constant number of chromosomes in the body cells of organisms that reproduce sexually?
Wiki User
∙ 15y ago
The purpose of meiosis is to divide the number of chromosomes in gamete cells (spermatazoa and oocytes) to the haploid number (23 chromosomes). Meiosis ensures the proper number of chromosomes to form a zygote, which is 46 chromosomes (diploid number), during fertilization. Essentially, somatic cells (all other cells except gamete cells) require 46 chromosomes. 23 of these come from the mother and the other 23 from the father. During fertilization, the sperm and oocyte containing the haploid number come together to produce the diploid number. Thus, without mieosis, sexual reproduction would result in zygotes with twice the number of chromosomes (and would continue exponentially)... something that would cause deformities and/or death of the future fetus.
Wiki User
∙ 15y ago
Wiki User
∙ 9y agoIn sexual reproduction meiosis plays the part of halving the number of chromosomes in reproductive cells before fertilization occurs. As such, the constant number of chromosomes in body cells remain.
Wiki User
∙ 11y agoMeiosis creates gametes, which are the cells involved in sexual reproduction (sperm and ova/eggs).
Gametes contain half the number of chromosomes as a somatic (non-sex) cell. This means that when the two gametes join (fertilization), the resulting organism now has the correct number of chromosomes - half from each gamete.
So, although meiosis produces cells with half the number of chromosomes - the correct number results after sexual reproduction.
Wiki User
∙ 9y agoMeiosis does not duplicate the full set chromosomes to each new cell. This is used in the creation of the egg and sperm cells, as they combine to form a new, full set.
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Why do larger organisms not need more chromosomes?
There is no correlation between number of chromosomes and size, nor is there a correlation between number chromosomes or genes and complexity. More chromosomes or genes aren't needed to maintain a larger animal because there is a copy of the genome within each cell.
Helps maintain the structure of chromosomes and control the activity of genes?
protein
How does cell division help maintain homeostasis in living things?
How does a broken bone heal?Cell division produces new healthy bone cells that replace the damaged cells.Similarly,cell division can replace aging cells and those that die from disease.Cell division allows organisms to grow,repare damaged structures and reproduce.Growth and repair are two functions of cell division that helps maintain homeostasis.A third function is reproduction of the organism.Some organisms reproduce simply through cell division.Many single-celled organisms such as amoebas reproduce this way.Other organisms can reproduce when cell division leads to the growth of new structures.For exmple, a cactus can grow new stems and roots.These structures can then break away from the parent plant and become a seperate plant.
The sum of all chemical reactions in an organism is?
The total of all chemical reactions that occur in an organism is called the organisms metabolism. Metabolism allows organisms to grow, reproduce, maintain their structures, and respond to environment.
Why is mitosis important to organisms?
Mitosis allows unicellular organisms to reproduce and create more (identical) organisms. Please see a biology book for a reference.
Why do organisms bother to reproduce?
Since almost all living things have a finite lifespan, organisms reproduce to maintain the presence of the species. It is a biological imperative.
How do scientists use chromosome comparisons to determine the evolutionary relationships among organisms?
Organisms that are closely related usually have very similar chromosomes numbers and a large degree of homology (similarity) beween their chromosomes (but the chromosomes are different enough to maintain genetic isolation).
How many functions are performed by organisms?
Organisms respond to stimulus, maintain homeostasis, use energy, grow and develop, reproduce, and evolve. So....around six.
What are some common characteristics in organisms?
Organisms are catorgized in many different ways. In general all organisms are multicellular or a single cell, reproduce, and consume some form of energy in order to continue the basics of life
What is a homestatasis?
Homestatasis is a relatively constant internal physical and chemical conditions that organisms maintain. It is a branch of biology in science.
What is one way unicellular organisms maintain homeostasis?
by growing, responding to the enviorment, transforming energy,and reproducing and by going closeer to the little bug in them it is the mirical of life
How do marine organisms help maintain the chemical balance of ocean water?
The chemical balance of ocean water is a constant cycle. Marine organisms maintain the balance of the ocean through the nutrients they consume. Once the organism dies, the nutrients are returned to the water, continuing the process.
What does range of tolerance mean regarding gorillas?
The optimum range of an organisms ability to maintain life. It is the type of conditions a specific species can survive in, and reproduce fertile offspring.
What does the homeostasis do?
Homeostasis is the regulation of internal biochemistry to maintain a constant internal environment. Without this constant regulation, living organisms would be unable to function. Therefore, homeostasis is the regulation of the internal environment of the body, and also the maintenance of this constant environment. Hope this helps!
What does homeostasis do?
Homeostasis is the regulation of internal biochemistry to maintain a constant internal environment. Without this constant regulation, living organisms would be unable to function. Therefore, homeostasis is the regulation of the internal environment of the body, and also the maintenance of this constant environment. Hope this helps!
Both meiosis and fertilization are essential to maintain chromosome number constant .why?
Total number of chromosomes remain same in same species of organism through meiosis process. In meiosis process the number of chromosomes are reduced to half as a result in gametes only one set of chromosomes will be present. In this process chromosomes are same.....
What is the mane for the animals that maintain a constant tamperture?
Warm blooded animals can maintain a constant body temperature.
