Question

3. What important event occurs during prophase I of meiosis that does not happen in mitosis?
A. replication of DNA
B. crossing over between homologous chromosomes
C. the nuclear envelope disappears
D. formation of spindle fibers
4. What occurs during crossing over?
A. two complete chromatids switch places
B. chromosomes move the other side of the cell
C. portions of homologous chromosomes interchange
D. chromosome number is cut in half

Answer 1

What Lesson ?

Answer 2

lesson 4

Answer 3

What gradee you in ?

Answer 4

9th

Answer 5

Oh, Never mind im in 10th .

Answer 6

thank you anyways

Answer 7

Your welcomee .

Answer 8

Well the 2nd question gives away the answer to the first question. And for the 2nd question, crossing over is where genes on 'twin' chromosomes exchange places

Answer 9

Number 3:
In meiosis, one round of DNA replication occurs for every ... Also during prophase the spindle ... [ What happen to chromosomes in mitosis that does not happen in ...

Answer 10

Number 4:
C. portions of homologous chromosomes interchange during crossing over.