Question

If 46 chromosomes are present at G1 phase then the number of chromosomes after S phase would be?​

Answer 1

Answer:

23. in meoisis it's reductional devision where chromosomal number becomes half... it occurs only in reproductive cells where as in mitosis the number doubles to 92 and devides to get 2 identical cells with 46 chromosomes each

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Answer 2

Answer:

If 46 chromosomes are present at G1 phase, then after the S phase there will be the same number of chromosomes i.e 46 chromosomes.

Explanation:

Chromosomes:

• Chromosomes are thread-like structures that are found within the nucleus of animal and plant cells.
• Protein and a single molecule of deoxyribonucleic acid make up each chromosome (DNA)
• In humans, Chromosomes are structures found in the center of cells (the nucleus) that carry long strands of DNA.

• The cell cycle's interphase is separated into three stages: G1, S, and G2.
• The cell cycle phase is arranged in the order of

                        G1  ->  S  ->  M

• In G1 phase the synthesis of cell takes place in this phase.
• In S phase, DNA synthesis occurs.
• During the S phase, the DNA molecules replicate to make a copy of their DNA.
• The number of chromosomes are same as in G1 phase.
• The number of chromosomes remains constant.
• After S phase, a human will have  same 46 chromosomes.

• At the beginning of the M phase there is also no change in the number of chromosomes

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