blueprint: part 2: The DNA Revolution: chapter 10: DNA Basics
I started part 2 of “blueprint” by Robert Plomin. It is very fascinating. Time passes quickly when I’m reading this chapter. I’m looking up words and trying to find images so I can picture it. Here are my notes:
- DNA literacy is important to understand the DNA revolution as it effects psychology (study of human mind, functions, cognitive processes, social behavior, human development, mental characteristics)
- DNA consists of molecules that obey laws of chemistry
- DNA is a double helix strand of DNA held together by weak, easily broken rungs.
- DNA consists of 4 molecules (Adenine, Thymine, Guanine, Cytosine
- There are 64 possible combinations.
- 20 amino acids
- Each cell produces 2,000 different proteins
- Proteins regulates our bodies, including neurons and neurotransmitters. These are basic elements of our brain and who we are psychologically.
- There are 3 billion rungs in our DNA double helix
- 23 segments (chromosomes) 1 cell 1 chromosome in an egg and 1 cell 1 chromosome in sperm. Joined is a full set of paired chromosomes which split and replicate. All have the same DNA sequence
- 99% of the 3 billion rungs in the DNA sequence are identical in all of us.
- 30 million rungs differ
- There are different cells for brain, blood, skin, liver and bone. The cells express different bits of DNA. RNA is used for gene expression
- There SNPs which are differences in our DNA.
- The author walks through an example of chromosome, rung # 53,767,042. The example walks through body weight percentages for different genotypes.
- CRISPR- is a way to change genes.