BSC 2010 Lecture Notes - Lecture 8: Punnett Square, Stamen, Gamete

• School: University of Florida
• Department: Biology - Biological Sciences
• Course: BSC 2010
• Professor: Cuddy Katrina

Document Summary

8. (cid:1005) ge(cid:374)es are parti(cid:272)ulate a(cid:374)d are i(cid:374)herited a(cid:272)(cid:272)ordi(cid:374)g to me(cid:374)del"s la(cid:449)s. 8. 2 alleles and genes interact to produce phenotypes. Breeding of plants and animals had yielded two hypotheses by the mid-19th century: blending inheritance gametes contained determinants (genes) that blended when gametes fused during fertilization, particulate inheritance each determinant was physically distinct and remained intact during fertilization. In the 1860s, the monk gregor mendel used the scientific method in studies of garden peas that clearly supported the particulate hypothesis. Garden peas were easy to grow and manipulate: their flowers have both male and female sex organs (pistils and stamens) that produce gametes. Peas normally self-fertilize, but male organs can be removed to allow fertilization with pollen from other flowers: specialized cells are in the stamen or ovule- they are going to make gametes. Characters observable physical features (e. g. , flower color, seed shape) Traits forms of a character (e. g. , purple flowers, wrinkled seeds)