Chapter 16.2 sexual reproduction

What is sexual reproduction?

is a process involving the fusion of two gametes to form a zygote and to produce genetically different offspring

What is fertilisation?

is the fusion of the nuclei of gametes

nuclei of gametes are haploid and that

the nucleus of a zygote is diploid

state the difference between asexual eproduction and sexual reproduction

1) asexual reproduction does not involve the fusion of gametes while sexual reproduction involves the fuscion of a male gamete with a female gamete to form a zygote

2) asexual reproduction only requires one parent while sexual reproduction requires two parents

3) offspring if asexual reproduction are genetically indentical while offspring of sexual reproduction are genetically different

4) asexual production is faster while sexual production is slower

advantages of sexual reproduction

1) offspring may inherit beneficial qualities from both parents

2) there is genetic variation in the offspring, therefore the offsprings are better adapted to changes in the environment

disadvantages of sexual reproduction

1) two parents are required

2) fusion of gamates is required

3) slower

advantagesof seuxal production in plants

1) plants can be selectively bred to produce offspring with desirable qualities

2) have resistance to diseases

3) result in higher yield of crop

disadvantages of sexual reproduction in plants

1) some off spring may be less well adapted to changes in the environment due to genetic variation

2) reproduction process is slower

3) there will be wastage of pollen and energy