DNA
- Created by: jtametodero
- Created on: 13-02-18 12:49
View mindmap
- DNA, protein synthesis
- The nucleus has the chromosome, of which part correspond to different genes, which have one allele per parent.
- Each nucleotide has a sugar group, phosphate group, and a nitrogen base.
- Nucleotides are inside the polymer of Doexyribonuclei acids.
- A->T, C->G
- These form hydrogen bonds, which give a double-helix structure.
- We all have 23 PAIRS of chromosomes with only one single chromosome determining sex
- Each nucleotide has a sugar group, phosphate group, and a nitrogen base.
- A change in DNA is a mutation.
- This entails a change in the order of amino acids, making a unique shape.
- The substrate will no longer fit if it is an enzyme, and specific areas may affect how it is expressed on the person.
- Certain chemicals and high-energy radioation can increase rate of mutations
- Mutations are not often useful, although these types are beneficial to natural selection
- This entails a change in the order of amino acids, making a unique shape.
- Gregor Mendel discovered genes, but was ridiculed as scientists had not found this, and he was a monk
- Each gene has two alleles, from mum and dad. The combination is the genotype.
- How these are expressed is the phenotype
- If the two are idetnical, they are homozygous, otherwise they are heterozygous
- Each gene has two alleles, from mum and dad. The combination is the genotype.
- The nucleus has the chromosome, of which part correspond to different genes, which have one allele per parent.
Comments
No comments have yet been made