[BIO SCI 75] - Final Exam Guide - Everything you need to know! (23 pages long)
Document Summary
Existence and continuity of a species depends on reproduction. Asexual reproduction: reproduction of ameba by ssion, reproduction o sea anemone by ssion, regenerating piece of foot in sea anemone. Potato"s can reproduce asexually: happens without sex or joining of nuclei. Produces individuals that are genetically identical: offspring have identical genotypes-some chromosomes and genes as the parents, can also involve the germ cells, egg or sperm, in certain cases such as parthenogenesis. 23 pairs of chromosomes in a female/male human somatic cell(body cell: males have xy while females have xx. Each egg or sperm have 23 chromosomes and the zygote has 46 chromosomes. Sometimes you have three instead of two of a chromosome, this can result in things like down syndrome(three of chromosome 21), cystic. Brosis(gene mutation-some cause severe symptoms, some mild: dogs-one species, but gene mutation and breeding makes then all different.
