Name: ection Genetics Lab 7-Meiosis Pre-lab 1. In which stage of meiosis does cr

Question

Name: ection Genetics Lab 7-Meiosis Pre-lab 1. In which stage of meiosis does crossing over occur? Which division reduces the number of chromosomes during meiosis (Meiosis I or Meiosis 11)? 2. 3. Describe the major difference between Meiosis I and Mitosis cell divisions in terms of how the chromosomes are segregated into the daughter cells. in human cells Indicate the number of chromosomes and molecules of DNA that are present during the stages listed below: 4. G2 phase: Molecules: Chromosomes: During Interkinesis: Chromosomes: After Meiosis 2 (in other words, in the gametes): Molecules: Chromosomes:

Explanation / Answer

Ans. 1 Crossing over occurs in Pachytene of Prophase I.

Ans. 2 Meiosis I reduces the number of chromosomes by half.

Ans. 3 During anaphase stage of mitosis, sister chromatids are pulled towards opposite poles while in meiosis I, homologous chromosomes separate but sister chromatids remain together.

Ans. 4 G2 Phase :

Chromosomes - 46

Molecules - 92

Interkinesis :

Chromosomes - 23

Molecules - 46

After Meiosis 2 :

Chromosomes - 23

Molecules - 23

Related Questions

Navigate

• Browse (All)
• Browse N
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.