0
What else can I help you with?
How many chromose will there be after fertilization?
After fertilization, the number of chromosomes will return to the normal diploid number for the species. This means that each human cell will typically have 46 chromosomes after fertilization - 23 from the egg and 23 from the sperm.
When a cell with half the normal number of chromosomes is generated during meiosis how can it eventually produce cells with the normal number of chromosomes?
During meiosis, a cell with half the normal number of chromosomes (haploid) is generated to eventually form gametes (sperm or egg). When two haploid gametes fuse during fertilization, they restore the full set of chromosomes (diploid) in the zygote. This zygote then undergoes mitotic cell divisions to produce cells with the normal number of chromosomes.
How does the alternation of meiosis and fertilization in the life cycles of sexually reproducing organisms maintain the normal chromosome count for each species?
Simple, Meiosis reduce the chromosome number in half while fertilization doubles the chromosome number. n=chromosome number Meiosis = 2n (primordial germ cells) ----> n (sperm cell/egg cell/polar bodies) Fertilization = sperm (n) + egg (n) ----> 2n (zygote)
What process union of egg and sperm restores chromosome number?
The union of an egg and sperm restores the chromosome number through the process of fertilization. During fertilization, the haploid egg and haploid sperm fuse to form a diploid zygote, which contains the full complement of chromosomes (46 in humans). This restores the normal chromosome number in the resulting offspring.
Why is it necessary to have two separate divisions in meiosis?
Having two separate divisions in meiosis is necessary to reduce the chromosome number by half, ensuring that the resulting gametes have the correct number of chromosomes. This reduction is essential for sexual reproduction, as the fusion of two gametes during fertilization will restore the full chromosome number in the offspring.
Gametes are diploid so that when fertilization occurs the resulting zygote will have the normal number of chromosomes for the species?
Actually, gametes are haploid, not diploid. This means they contain half the number of chromosomes typical for the species. During fertilization, two haploid gametes (one from each parent) combine to form a diploid zygote, restoring the normal chromosome number for that species. This ensures genetic diversity and proper development.
Gametes must be haploid because?
they need to combine during fertilization to restore the diploid number of chromosomes in the offspring. Having haploid gametes ensures that the resulting zygote has the correct number of chromosomes for normal development.
What Has the same number of chromosome sets as a germ cell?
A haploid germ cell has the same number of chromosome sets as a gamete, which is half the number of chromosome sets found in a somatic cell. This enables the gametes to fuse during fertilization to restore the diploid number of chromosomes in the zygote.
How does the alternation of Meiosis and fertilization in the life cycle of sexually reproducing organisms maintain normal chromosome count for each species?
Simple, Meiosis reduce the chromosome number in half while fertilization doubles the chromosome number. n=chromosome number Meiosis = 2n (primordial germ cells) ----> n (sperm cell/egg cell/polar bodies) Fertilization = sperm (n) + egg (n) ----> 2n (zygote)
The process of meiosis and fertilization help ensure the survival of the species by providing each generation with the same number of?
chromosomes, leading to genetic variation through recombination of genes. Meiosis halves the number of chromosomes in gametes, ensuring that the offspring will have the appropriate chromosome number when fertilization occurs to restore the full set. This genetic variation enhances adaptability and diversity within a species, increasing the chances of survival in changing environments.
Does meiosis increaase the number of chromosomes in a cell?
No, it halves it. This is because Meiosis is only used in the production of sex cells (gametes), and two gametes are needed for a zygote to be created, and each carries half the normal number of chromosomes. When they join together during fertilization their offspring will carry the normal number of chromosomes.
What might happen if human chromosomes did not separate?
well if human chromosomes number 21 does not separate during fertilization the baby will be with down syndrome. at fertilization of the egg with a normal sperm the zygote contain three chromosome number 21 (trizomic 21) hence the zygote contain 47 chromosome instead of 46.
