Reproduction

Question 1

What is sexual reproduction

Answer 1

• The fusion of male and female gametes.
• Offspring contain a mixture of their parents genes
• Happens by meiosis

there is genetic variation

Question 2

What is asexual reproduction

Answer 2

A type of reproduction that involves mitosis only and produces genetically identical offspring known as daughter cells

Question 3

Advantages of sexual reproduction

Answer 3

• There is variation
• Variation increases the chance of a species surviving a change in environment
  *Natural selection can be sped up by humans in selective breeding to increase food production

Question 4

Advantages of asexual reproduction(3)

Answer 4

• Only one parent
• Uses less energy than sexual reproduction
• Faster than sexual

Question 5

What are gametes

Answer 5

Sex cells
Haploid-half the number of chromosomes

Question 6

What is Meiosis

Answer 6

The cell division involved in the formation of gametes
Involves two divisions

Question 7

What is interphase

Answer 7

Copies of genetic information are made during this process

Question 8

What happens during the first stage of Meiosis

Answer 8

•Chromosome pairs line up along the equator of the cell
•The pair of chromosomes are separated and move to opposite sides of the cell
•Chromosome number is halved

Question 9

What happens during the second stage of Meiosis

Answer 9

Chromosomes line up along the equator
Chromatids are separated and move to opposite sides
Four unique haploid gametes are produced

Question 10

What are the disadvantages of sexual reproduction

Answer 10

Two parents are required
More time and energy required so fewer offspring produced

Question 11

what is the disadvantage to asexual reproduction

Answer 11

No genetic variation- reduces the probability of a species being able to adapt to environmental change