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a. Name the process by which gametes are produced in humans - VCE - SSCE Biology - Question 1 - 2007 - Paper 1
Question 1
a. Name the process by which gametes are produced in humans. b. Use the symbols X and Y to complete the diagram below to show how the sex chromosomes behave during ... show full transcript
Worked Solution & Example Answer:a. Name the process by which gametes are produced in humans - VCE - SSCE Biology - Question 1 - 2007 - Paper 1
Step 1
a. Name the process by which gametes are produced in humans.
Answer
The process by which gametes are produced in humans is called meiosis. Meiosis is a type of cell division that reduces the chromosome number by half, resulting in the formation of four haploid cells, each with half the number of chromosomes of the original diploid cell.
Step 2
b. Use the symbols X and Y to complete the diagram below to show how the sex chromosomes behave during meiosis in a human male.
Answer
In the diagram, during stage 1 of meiosis, the diploid cell (XY) will undergo replication, producing two sets of chromosomes. During stage 2, the homologous chromosomes will separate and migrate to different cells. The two haploid cells formed will have either an X or a Y chromosome. Therefore, the completed diagram should show:
- At stage 1: XY
- At stage 2: Two haploid cells, one with X and the other with Y, leading to the formation of sperms:
- Sperm 1: X
- Sperm 2: Y
- Sperm 3: X
- Sperm 4: Y