Year 12 Bi

Notes

Year 12 Biology Lesson 2: Plant and asexual reproduction 1. Asexual reproduction in plants Sexual reproduction vs asexual reproduction • This term we will be studying heredity: the passing of characteristics from one generation to the next through genetics. - How are characteristics passed from one generation to the next?' • traits are passed through genes thas exit intre oNA which is stored in the nucleus. • Reproduction is the production of new organisms (offspring). This can be achieved through sexual or asexual means. - Sexual reproduction requires the combination of genetic information from two individuals. - Asexual reproduction only requires one individual and produces offspring that are identical to the parent. This can be seen as 'cloning'. • Ploidy is a term we use to identify the number of complete sets of chromosomes in a cell or an organism. You should be familiar with these words. - Haploid (1n): 1 set of chromosomes, like we have in our gametes. - Diploid (2n): 2 sets of chromosomes, like we have in our cells from our parents. - Polyploid (3n or more): numerous sets of chromosomes, mostly seen in plants. • Asexual reproduction only requires mitosis: - Producing clone...