Four different steps that occur during meiosis are given in the following list. (i) Complete separation of chromatids (ii) Pairing of homologous chromosomes (iii) Lining up of paired chromosomes on equator (iv) Crossing over between chromatids Select the correct sequential arrangement of the steps.
A pair of homologous chromosomes
Separation of homologous chromosomes.
Number of pairs of homologous chromosomes, no of chromatids and number of centromeres respectively
Which of the following correctly shows a pair of homologous chromosomes at the start of meiosis?
Given diagram shows a pair of homologous chromosomes during meiosis Maximum crossing over will occur between genes
Breakage, exchange and rejoining of homologous chromosomal segments.
Match column I with column II and select the correct option from the given codes. {:("Column I","Column II"),("Chromosomes move to equator",(i)"Pachytene"),("Centromere splits and ",(ii)"Zygotene"),("Pairing between homologous chromosomes",(iii)"Anaphase"),("Crossing over between homologous chromosomes",(iv)"Metaphase"):}
Which of the following is correct about bivalent? (i) Bivalents are tetrads. (ii) A bivalent means 4 chromatids and 2 centromeres. (iii) One bivalent consists of 2 homologous chromosomes. (iv) Bivalents form in zygotene.
MBD PUBLICATION-Cell cycle and division
-QUESTION BANK
