ANTH 102 Lecture Notes - Lecture 10: Punnett Square, Letter Case, Y Chromosome
Document Summary
Crossed different strains of true-breeding plants and studied their offspring. Creates hybrids to see what they look like and what characteristics they emerge with. Was originally a (cid:858)(cid:271)lending(cid:859) (cid:271)eliever (cid:894)(cid:271)lend (cid:272)hara(cid:272)teristi(cid:272)s(cid:895) Worked with common garden peas and considered one trait at a time. Work with peas instead of humans: humans take a very long time to reproduce and therefore be able to see results. Humans exist on a continuum: punnett square. Does not give exact results: law of segregation. When gametes are produced, allele pairs separate and retain their separate identities through generations: sex chromosomes example. If female, got one x from father, one from father. X chromosome has this gene though: law of independent assortment. Genes for different traits are inherited independently of each other (as long as they exist on the same chromosome) Ex: freckles are not related to brown hair not related to brown eyes.
