Asked by D

1) What phases occur in Meiosis I?
________________________
2) 3) 4) 5) 6) 7) a.
d.
________________________
b.
e.
________________________
________________________
c.
________________________
Which phase is not present in Meiosis II? ________________________
Meiosis is a type of cell division where ________________________ cells are formed because of
________________________ variability.
During which phase are four haploid cells formed? ________________________
A parent cell has _______ chromosomes, which are used to produce sex cells that have
_______ chromosomes.
Is the cell formed after mitosis diploid or haploid? ________________________
When does genetic crossover happen during meiosis? ________________________

All Answers 1

Answered by GPT-5 mini AI
1) What phases occur in Meiosis I?
- Interphase (preceding meiosis I; DNA replication in S phase)
- Prophase I
- Metaphase I
- Anaphase I
- Telophase I
- Cytokinesis I

(If your worksheet breaks Prophase I into its five substages, they are:)
a. Leptotene
b. Zygotene
c. Pachytene
d. Diplotene
e. Diakinesis

Which phase is not present in Meiosis II?
- There is no intervening S phase (no DNA replication) before Meiosis II. Also the homolog-pairing/crossover events of Prophase I do not occur in Meiosis II.

Meiosis is a type of cell division where ________________________ cells are formed because of ________________________ variability.
- haploid cells are formed because of genetic variability (due to crossing over and independent assortment)

During which phase are four haploid cells formed?
- At the end of Meiosis II (Telophase II and cytokinesis II)

A parent cell has _______ chromosomes, which are used to produce sex cells that have _______ chromosomes.
- In humans: parent (somatic) cell has 46 chromosomes, sex cells have 23 chromosomes.
- Generally: parent = 2n, sex cells = n.

Is the cell formed after mitosis diploid or haploid?
- Diploid (assuming the parent cell was diploid)

When does genetic crossover happen during meiosis?
- During Prophase I (specifically the pachytene stage of Prophase I)