Biology 1201A Lecture Notes - Lecture 8: Sister Chromatids, Mendelian Inheritance, Kinetochore
Document Summary
Lecture 8: generating diversity i - meiosis and recombination. Mitosis is the process that divides replicated dna into two equal parts. Unicellular organisms, usually haploid (but any ploid) Can have asexual reproduction by cloning themselves but not us: without meiosis, a type of parthenogenesis, ex: aphids. Most reproduce via sexual reproduction: during development, cell undergoes meiosis, daughter cells have half the number of chromosomes, haploid games - one of each chromosome, fertilized by another cell. Haploid genetic material combines to make the next generation. There are female and male plants: female plants have eggs, male plants have pollen which is sperm. This is why siblings are not the same unless twins, different set of chromes from parents than you do. Mitosis produces 2 daughter cells, meiosis produces 4 daughter cells. Mitosis occurs in somatic cells, meiosis only happens in reproductive cells. Mitosis produces diploid cells and meiosis produces haploid cells.
