inheritance variation and evolution

Question 1

what does asexual reproduction involve

Answer 1

-only one parent

• No fusion of gametes,so nomixing of genetic information
• the production of genetically identical offspring (clones)

-mitosis

Question 2

how do straw berries reproduce asexually?

Answer 2

they have long shoots called runners in which they send out into the ground and grow a new plant

Question 3

how do daffodils reproduce asexually

Answer 3

daffodils have lots of smaller bulbs which grow into new plants

Question 4

how do fungi reproduce asexually

Answer 4

through spores

Question 5

what happens when there is cell division in meiosis

Answer 5

• copies of the genetic information are made
• the cell divides twice to form four gametes,each with a single set of chromosomes
• all gametes are genetically different form eachother

Question 6

Why is meiosis important?

Answer 6

it halves the number of chromosomes in gametes so that there is a correct no. of chromosomes

Question 7

what are the pros of sexual reproducction

Answer 7

• it produces variation in offspring
• if the environment changes,any variation means that at least some organisms will be suited and can survive
• It allows humans to selectively breed plants and animals, and increase food production

Question 8

what are the advantages of asexual production

Answer 8

• only one parent is needed
• it is more time and energy efficient,as the organism does not need to find a mate
• It is faster than sexual production
• many offspring can be produced to make the best use of good conditions