Card Set Information
Everything except sex chromosomes
X,Y- One pair code for sex traits
Same genes not necessarily same alleles
One from mom and one from dad
All DNA genotype
Four possible Nucleotides
All have nitrogen and phosphate-sugar-base
DNA is a string of nucleotides
A only with T, C only with G
Diagram in notes.
1. Parent DNA- two strands of base paired nucleotides.
2. Parental strands unwind and separate. This is done by enzymes .
3. Once open and exposed is will attract a complementary base.
Unique Nucleotide Sequences
Codes for amino acids- which are proteins
3 billion base pairs for humans DNA
Enzymes that cut up DNA.
Made by bacteria- defense against bacteria
110 of them
Attach to DNA and look for a recognizable sequence, cut the DNA
Ex- CGATIGCATIGCAATCCGCGATIGC-- four pieces
Bands of children have to come from parents
Unless mutations the bands will match
Siblings will have half bands in common
Unrelated people will have few bands in common
Make identical cells to the ones that are there.
92- does not work must have 46
So if you use half of both it would work
Cell division by germ cells- reduces chromosomes number process that makes egg and sperm.