If an egg is fertilized by two sperms and form a mitotic spindle with three poles. Select the correct statement, about the daughter cell, after mitosis.

Be indistinguishable from normal cells

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Eliminate the chromosomes contributed by the second sperm

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Eliminate the chromosomes contributed by the egg

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Display an abnormal number of chromosomes

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Stop protein synthesis immediately

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Solution

The correct option is B Be indistinguishable from normal cells
Fertilisation of haploid egg with two sperms will make a zygote with 3n chromosomal count (3n DNA content). DNA replication during S phase of cell cycle will double the DNA content to 6n. Formation of three poles during mitosis will distribute 2n DNA to each pole thereby restoring the diploid condition. So, the daughter cells will have the diploid (2n) chromosomal count and would be indistinguishable from normal cells. So, the correct answer is option A.

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Similar questions

Which chromosome is contributed by the sperm during fertilization?

Fill in the blanks
(a) Mitosis occurs in our ..... cells.
(b) Mitosis produces two daughter cells whereas meiosis produces ...... daughter cells.
(c) Meiosis occurs only in ..... cells.
(d) Modern humans have 46 chromosomes. Their sperms and eggs will have......chromosomes each.
(e) During the pairing of chromosomes in meiosis, the ...... chromosomes come to lie side by side.
(f) The.......(s) are surrounded by radiating rays and termed as aster.

Q. Due to non-disjunction of chromosomes during spermatogenesis, sperms carry both sex chromosomes (22A+XY) and some sperms do not carry any sex chromosome (22A+0). If these sperms fertilize normal eggs (22A+X), what types of genetic disorders appear among the offsprings?

Q. The sperm and the egg make different contributions to the zygote. Which of the following statements about their contributions are true?

(i) Sperm contributes most of the mitochondria.
(ii) Egg contributes most of the cytoplasm.
(iii) Both sperm and egg contribute a haploid nucleus.
(iv) Both sperm and egg contribute centrioles.

Q. When a sperm containing Y chromosome fertilizes an egg with X chromosome, the zygote develops into a .......... child.

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