Anthropology 101.4

Anthropology 101.4 - Evolution- change in allele properties...

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Evolution- change in allele properties in a population over time. Genotype- genetic makeup of alleles (AA, Aa, aa) Phenotype- what is expressed, what you look like, brown hair, blue eyes, purple flower - Ex. Alleles- R, w [phenotypes- red, white. Genotypes- RR, Rw, ww] - Alleles A, B, o [phenotypes- A, Ab, B, o. genotypes- Aa, Ao, Ab, BB, Bo, oo] - Co-dominance: when both alleles are expressed. Ex. AB Functions of DNA - Hereditary material must o Replicate the code: double helix splits. Each old strand (nucleotide) regenerates a new corresponding strand. Strands unzip and form templates. templates plus nucleotides yield daughters. [complementary base pairing. A & T, G & C]. The DNA strand are separated when enzymes break the bonds that hold bases together. This leaves two previously joined strands of DNA separated with their bases exposed. Unattached nucleotides in the nucleus are attracted to their complimentary base pairs. o Synthesize protein: 2 steps. Transcription- creation of mRNA based on the DNA
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Anthropology 101.4 - Evolution- change in allele properties...

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