BioMidtermModule2Lect16Study notes.pdf

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University of Toronto Scarborough
Biological Sciences
Effiette Sauer

The homunculus theory: Sperm donates an entire copy of itself to offspring and egg only provides nutrients. (Problem, offspring looking like both parents or more like their mom) The blended theory: Sperm and egg contain essential essences that mix together (problem: siblings don’t all look alike) Good things about peas: variation, noticeable differences, easy to grow, easy access to reproductive parts) Selfing: Transfer of pollen to stigma within the same plant. Mendel’s way is cross-pollination (forced mating by taking pollen of one plant and transferring it into another) Allele- version of a gene Gamete- mature reproductive cell (haploid) Trait- characteristics that are passed on Gene- Determine characteristics (part of Cross- mating between 2 individuals resulting chromosome that gets converted into in fusion of gametes RNA>protein Diploid- 2 homologous sets of chromosomes Locus- Location of a gene on a chromosome in eukaryotic cells True-breeding- trait remains unchanged for F1 generation- progeny of mating of p many generations generation Haploid- 1 set of chromosomes (gametes) F2 generation- offspring of mating of F1 Zygote- Fusion of female + male gametes generation Monohybrid crosses i
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