9.7 - The outcomes and processes of mitosis and meiosis

Question 1

How is genetic diversity contributed to through random fusion of gametes at fertilisation?

Answer 1

the presence of genetically diverse zygotes contributes to genetic diversity of a species

Question 2

Why is it important that the genetic material is different in meiosis?

Answer 2

• important for genetic variation within families and the population
• genetic variation reduces the risk of inheriting genetic diseases

Question 3

Why is it important that the daughter cells in mitosis are genetically identical to one another?

Answer 3

growth and cell replacement can occur within a body continually
every cell in an organism’s body contain the same exact genetic material - the genome

Question 4

Why is it important that the genetic material is different in meiosis?

Answer 4

• important for genetic variation within families and the population
• genetic variation reduces the risk of inheriting genetic diseases

Question 5

Genetical identity of the daughter cells (mitosis vs meiosis):

Answer 5

• mitosis = genetically identical
• meiosis = not genetically identical

Question 6

Ploidy of daughter cells (mitosis vs meiosis):

Answer 6

• mitosis = 2n
• meiosis = n

Question 7

Number of daughter cells (mitosis vs meiosis):

Answer 7

mitosis = 2
meiosis = 4

Question 8

What does meiosis contribute to?

Answer 8

genetically different gametes for sexual reproduction

Question 9

What does mitosis contribute to?

Answer 9

the growth of an organism to replace dead/dying cells