L7: Sexual and Asexual reproduction

Question 1

What is sexual reproduction?

Answer 1

• Type of reproduction
• Involve production of gametes by meiosis
• The gamete of the male and female fuse to form a zygote
• Genetic information from each gamete is mixed so the resulting zygote is genetically different from each parent

Question 2

What is asexual reproduction?

Answer 2

• Type of reproduction
• Involves mitosis
• Produces genetically identical offspring known as daughter cells

Question 3

TRUE OR FALSE: All offspring produced in asexual reproduction are females

Answer 3

FALSE: no concept of sex

Question 4

What is the advantage of sexual reproduction?

Answer 4

Sexual reproduction creates genetic variation, increasing the probability of a species adapting to and survive environmental changes

Question 5

Describe the two disadvantages of sexual reproduction

Answer 5

• Two parents are required, making the reproduction difficult in endangered population or in species which exhibit solitary lifestyles
• More time and energy is required so fewer offspring are produced

Question 6

Describe the three advantages of asexual reproduction

Answer 6

• Only one parent is required
• Lots of offspring can be produced in a short period of time, enabling the rapid colonisation of an area and reducing competition from other species - it is quicker
• Requires less energy(?)

Question 7

What is the disadvantage of asexual reproduction?

Answer 7

No genetic variations (expect genetic mutations) reducing the probability of a species being able to adapt to environmental change