Number of chromosomes are maintained from generation to generation by :

Related MCQs

• A. Number of chiasmata is more in longer chromosomes. R. The number of chiasmata depends on the length of chromosomes.
• Match the following : Coulmn-I Coulmn-II (A) Prophase-I (i) Chromosomes move toward one plane along with centromere. (B) Metaphase-II (ii) Half the number of chromosomes in seen (C) Anaphase-I (iii) Longest phase of meiosis-I (D) Telophase-I (iv) Two nuclei are seen
• What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its root tip cells ?
• The root cell of wheat plant has 42 chromosomes. What would be the number of chromosomes in the synergid cell ?
• A. During interphase, chromosomes are recognized as chromatin network. R. Chromosomes are highly dispersed during this phase.
• Which of the following statement is/are correct for Prophase-I ? (i) During diplotene, the members of each pair of homologous chromosomes start moving away from one another. (ii) In zygotene, bivalent chromosomes appear tetravalent. (iii) In diakinesis, chromatids become separated even at the site of chiasmata.
• Which of the following statement is/are correct for Meiosis-II ? (i) Chromosomes are arranged on equatorial plate in prophase-II (ii) Nucleolus disappear during telophase-II (iii) In anaphase-II, the chromatids with their independent centromeres are called chromosomes. (iv) In metaphase-II, centromere of each chromosome becomes attached to filament of bipolar spindle.
• In mitosis the daughter cells resemble to their parent cell. But in meiosis they differ not only from parent cell in having half the number of chromosomes, but also differ among themselves qualitatively in genetic constitution due to.....
• A. The meiotic division-I is also called reduction division. R. During this the chromosomes are distributed in two cells in half their number.
• “The number of chiasmata depends on chromosomes” – What is the mistake in the given statement ?