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Hi friends!
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.
What else can I help you with?
The table below shows the number of chromosome pairs for various organisms. Which organism can produce the highest number of genetically different gametes?
Carp, Giraffe
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).
Why meiotic division is called reduction division?
Meiotic division is called reduction division because the daughter cells (called 'gametes') are haploid, that is, carry half the number of chromosomes of the parent cells. Gametes carry one chromosome of each homologous pair, whereas the diploid parent cells carry both.
When gametes combine to form a zygote the chromosomes number of the zygote is now referred to as?
diploid is what the total number of chromosomes in an organism is
If an organism has five pairs of chromosomes how many different gametes could it produce without crossing over?
The organism could produce 32 different gametes without crossing over. This is calculated as 2^n, where n is the number of chromosome pairs. In this case, 2^5 = 32.
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 much unique gametes can be produced via independent assortment for an organism with a diploid number of six chromosomes?
An organism with a diploid number of six chromosomes has three pairs of chromosomes (2n = 6). During meiosis, independent assortment allows for the random distribution of these chromosome pairs into gametes. The number of unique gametes produced can be calculated using the formula (2^n), where (n) is the number of chromosome pairs. Thus, for this organism, (2^3 = 8) unique gametes can be produced via independent assortment.
How many possible chromosome combinations are there for the gametes of an organism with a haploid number equal to 4?
2^n possible combinations
If an organism has 6 pairs of chromosomes how many different gametes can it produce?
An organism with 6 pairs of chromosomes can produce a variety of gametes through independent assortment during meiosis. The number of different gametes can be calculated using the formula (2^n), where (n) is the number of chromosome pairs. For 6 pairs, this results in (2^6 = 64) different possible gametes. Thus, the organism can produce 64 distinct gametes.
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.
Which organism has 20 chromosomes in one of its gametes?
Humans have 23 pairs of chromosomes, with 22 pairs of autosomes and one pair of sex chromosomes. During gamete formation, the chromosome number is halved, resulting in gametes with 23 chromosomes. Therefore, the organism that has 20 chromosomes in one of its gametes would not be human.
Is an organism has 5 pair of chromosome how many different gemetes can it produce?
An organism with 5 pairs of chromosomes can produce a maximum of (2^n) different gametes, where (n) is the number of chromosome pairs. In this case, (n = 5), so the calculation is (2^5), which equals 32. Therefore, the organism can produce 32 different gametes through the processes of independent assortment and recombination during meiosis.
The table below shows the number of chromosome pairs for various organisms. Which organism can produce the highest number of genetically different gametes?
Carp, Giraffe
