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What do gametes do to maintain the chromosome number of an organism?
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∙ 12y ago
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Most of the species reproduce sexually. In sexual reproduction, both male and female gametes are involved. In order to maintain the number of chromosomes in offsprings, sex cells in parents undergo meiosis, which reduces the chromosomal number to half. For instance, we take human sex cells with 46 chromosomes undergo miosis, and produce 4 haploid daughter cells having 23 chromosomes each.
Now, the question is how meiosis reduces the chromosomal number to half.In meiosis’ different stages, homologous pair of chromosome and non-sister chromatids segregate,leaving daughter cells with only 23 chromosomes(half no. of chromosomes) known as gametes;male gamete=sperm,female gamete=ovum.
Fusion of male and female gametes to form a zygote, is known as fertilization. When sperm fertilizes an egg, conception occurs in mother womb with a zygote having 46 chromosomes (receiving 23 chromosomes from each parent)which gradually develops into a fetus and then offspring not identical to parents but with the same no. of chromosomes as parents do have.
ishratwaris
Zechariah Mayert
Tyreek Hills
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Is it true that egg and sperm each have twice the number of chromosome as parent organism?
No. Egg and Sperm gametes actually have half the number of chromosomes as the cells of the parent organism.
Does meiosis reduce chromosome numbers?
Yes - the daughter cells produced in meiosis (gametes) have half the number of chromosomes as those in the original cell. This is why meiosis is referred to as 'reduction division'. However, as meiosis produces cells which are involved in sexual reproduction - the chromosome number in the species remains constant. This is because when the two gametes combine, the resulting organism has the correct number of chromosomes (half from each gamete).
All cells within an organism will have the same number of chromosomes except the gamete?
All cells within an organism will have the same number of chromosomes, which is the diploid number. The gametes, on the other hand, will have the haploid number of chromosomes.
What is a dipliod number?
The diploid number is the total number of chromosomes found in the autosomes, or non-gamete cells of an organism. The diploid number includes both chromosomes of each homologous pair. Gametes, on the other hand, carry only one chromosome from each homologous pair; they are haploid rather than diploid. Gametes therefore carry half the number of chromosomes that autosomes do.
How meiosis maintain a constant number of chromosome within a species?
Meiosis creates gametes (sperm and ova/eggs) which are involved in sexual reproduction. The result of meiosis is cells with half the number of chromosomes as a somatic (non-sex) cell. This ensures that when the gametes join during sexual reproduction, the resulting organism has the correct number of chromosomes (half from each gamete). Thus meiosis maintains the chromosome number.
What To maintain the chromosome number of an organism the gametes must?
Be produced by meosis.
To maintain the number of chromosomes of an organism what do gametes do?
be produced by meiosis
To maintain the chromosome number of an organism the gamete must what?
Be produced by meosis.
How many possible chromosome combinations are there for the gametes of an organism with a haploid number equal to 4?
2^n possible combinations
What effect does nondisjunction have on the chromosome number of the gametes?
It gives one of the gametes an extra chromosome and leaves the other gamete with one less chromosome.
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.....
Name the 2 human gametes and tell their chromosome number?
The human gametes are Male gametes are sperm and female gametes are eggs. And the gametes chromosome numbers are 42.
Is it true that egg and sperm each have twice the number of chromosome as parent organism?
No. Egg and Sperm gametes actually have half the number of chromosomes as the cells of the parent organism.
What is the diploid number of an organism represent?
number of chromosome
A human zygote is normally produced from two gametes that are identical in?
chromosome number
Does meiosis reduce chromosome numbers?
Yes - the daughter cells produced in meiosis (gametes) have half the number of chromosomes as those in the original cell. This is why meiosis is referred to as 'reduction division'. However, as meiosis produces cells which are involved in sexual reproduction - the chromosome number in the species remains constant. This is because when the two gametes combine, the resulting organism has the correct number of chromosomes (half from each gamete).
What best describes the function of meiosis?
reduces chromosome number by half, produces gametes
