What is the cell division phase in the figure 4 (above)? A. Prophase I B. Metaph

Question

What is the cell division phase in the figure 4 (above)? A. Prophase I B. Metaphase I C. Prophase II D. Metaphase II Identify B (pair) in the above mentioned figure 4? A. Homologous chromosomes B. Chiasmata C. Nucleus D. Centrosome What is the name of the process of this pair formation (in B)? A. Centromere splitting B. Nucleolus merging C. Synapsis D. Spindle formation Identify A (physical cross) in the above-mentioned figure 4? A. Homologous chromosomes are Unpairing B. Cleavage furrow formation C. Nucleus breaks DNA in half D. Chiasmata What event is taking place at B in fig 4 because of the formation of this cross? A. Spindle being disintegrated B. Unpairing of chromosomes that is known as anti-synapsis C. Crossing over D. All of the above What is the chromosome number of primary spermatocyte during spermatogenesis? A. 22 B. 23 C. 44 D. 46 What is the chromosome number of sperm? A. 22 B. 23

Explanation / Answer

12 prophase 1

It is because the chromosomes see, not to be in aligned state on metaphasic plate and there seems to be 2n-4c state of chromosomes where n is number and c is amount of DNA

13. Homologus chromosomes

Factual no explination

14. synapsis.

Factual term no explination.

15. Chaismata

The point where homologus chromosomes remain attached and crossing over can take place is called chaismata.

Hope it helps ... Kind Regards

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