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Chapter 2: The Genetic and Evolutionary Roots of Behavior
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- 1Cell types1) Red blood cells
2)Goblet cells - found in the lining of the small intestine, manufacture granules of a protein called mucigen. Component of the mucus that lubricates the intestine
3)Rod cells - which serve as light detectors in the eye, contain a protein called rhodopsin that absorbs light - 2Gene composition1)Skin
2)Skin made of loads of cells
3)Each cell contains a nucleus
4)Each human nucleus contains 46 chromosomes (carry instructions for how to build and operate a body.) - 3Chromosome composition1) Chromosomes are made up of coiled strands of DNA
2) The DNA Molecule has a double helix shape
3) the rungs of the double helix are made up of complimentary chains of adenine (A) & thymine (T), and guanine (G) & cystosine (C) - 4How many possible combinations of chromosomes are there?More than 8 million
- 5Homozygousif the paired genes are identical, we say the individual is homozygous for that gene
- 6HeterozygousIf the two genes are different, the individual is _____ for the gene
- 7Allelean alternative form of a specific gene; a variation
- 8codominant allelesa relationship in which both genes in a pair affect the phenotype.
A common example is blood type: if the person inherits the allele favoring blood type A from and parent and B from the other parent, the person will end up having type AB - 9incomplete dominance of allelesa person with 2 different alleles will have a phenotype that's intermediate between the types favored by each allele on its own
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- Fichas sobre Chapter 2: The Genetic and Evolutionary Roots of Behavior, creado por feelingthepayne el 10/11/2014.
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