ANTB14H3 Lecture 2: LECTURE 2 - FALL2013 - MICROEVOLUTION - ANTB14.docx

• School: UTSC
• Department: Anthropology
• Course: ANTB14H3
• Professor: Michael Schillaci

Document Summary

Finches (rlsp b/w avg parental beak size + offspring beak size generally pos. Inheritence - variation needed for ns passed on from 1 gen to another linear) Darwin didn"t know about inheritence (or how the rlsn is passed on) Mendel experimenting 7 phenotypes (colour of peas and skin texture) 1st bred plants to make 1 char (such as pod colour) consistently = pure strain of peas. Then, cross bred 1st gen yielded 1 of 2 char. Gene having 2 alleles (1 from each parent) W/in nuc dna in form of chromosomes has hereditary info. Each e cell can rep cell through mitosis (divide into 2 identical daughter cells) same num of chromosomes as parent cell. Meiosis daughter cells has half chromosomes from parent occur only in production of gametes. Punett each column = 1 allele. Homozygous (yy or yy) vs heterozygous (all in 1st gen will be heterozygous) Simple peaplant w/ 1 locus (easy to study)