differences between mitosis & meiosis

Question 1

what are the 9 differences between mitosis & meiosis?

Answer 1

1. number of nuclear divisions
2. formation of bivalents in prophase
3. formation of chiasmata
4. occurrence of crossing over
5. number of rows formed at the equator of the cell during metaphase
6. separation of homologous chromosomes during anaphase
7. number of daughter cells formed
8. number of chromosomes present in daughter cells
9. genetically identical daughter cells

Question 2

what is the difference in the number of nuclear divisions between mitosis & meiosis?

Answer 2

• in mitosis, the nucleus only divides once,
• while in meiosis, there are 2 successive nuclear divisions

Question 3

what is the difference in the formation of bivalents in prophase between mitosis & meiosis?

Answer 3

• no bivalents are formed in mitosis as homologous chromosomes do not pair up during prophase,
• whereas in prophase I of meiosis, homologous chromosomes associate to form bivalents

Question 4

what is the difference in the formation of chiasmata between mitosis & meiosis?

Answer 4

• in mitosis, chiasmata are not formed,
• while in meiosis, chiasmata are likely to formed

Question 5

what is the difference in the occurrence of crossing over between mitosis & meiosis?

Answer 5

• crossing over does not occur in mitosis,
• while crossing over is likely to occur in meiosis

Question 6

what is the difference in the number of rows formed at the equator of the cell during metaphase between mitosis & meiosis?

Answer 6

• chromosomes form a single row at the equator of the cell during metaphase of mitosis,
• while homologous chromosomes form 2 rows at the equator of the cell during metaphase I of meiosis

Question 7

what is the difference in the separation of homologous chromosomes during anaphase between mitosis & meiosis?

Answer 7

• homologous chromosomes are not separated during anaphase of mitosis,
• whereas in anaphase I of meiosis, homologous chromosomes are separated

Question 8

what is the difference in the number of daughter cells formed between mitosis & meiosis?

Answer 8

– in mitosis, 2 diploid daughter cells are formed,

• whereas in meiosis, 4 haploid daughter cells are formed

Question 9

what is the difference in the number of chromosomes present in daughter cells between mitosis & meiosis?

Answer 9

– in mitosis, daughter cells have the same number of chromosomes as the parent cells,

• whereas in meiosis, daughter cells have only half the number of chromosomes found in the parent cell

Question 10

what is the difference between mitosis & meiosis in terms of genetically identical daughter cells?

Answer 10

– in mitosis, daughter cells are genetically identical to the parent cell in the absence of mutation,

• whereas in meiosis, daughter cells are genetically different from the parent cell