Molecular Genetics Flashcards
1
Q
what are the monomers of DNA?
A
nucleotides
2
Q
what do nucleotides consist of?
A
- deoxyribose sugar
- phosphate group
- nitrogenous base
3
Q
what is a gene?
A
- made up of nucleotides
- responsible for characteristics of organism
- make up dna
4
Q
what is a chromosome?
A
structure in all living cells that consists of a single molecule of DNA
carries genes
5
Q
what is a genome?
A
- genetic material
- genes and non coding dna
6
Q
what is a mutation?
A
changes is dna sequences
7
Q
what are the 3 possibilities that a mutation can have?
A
- neutral
- detrimental
- beneficial
8
Q
what are the types of changes to a dna sequences? (RIBSID)
A
- repetition
- insertion
- breakage
- substitution
- inversion
- deletion
9
Q
what is a codon and what does it code for?
A
- three base dna sequence in a gene
- codes for amino acid
10
Q
what makes different cell types in one organism different from one another?
A
expression differs between cells
expression is the message from the dna
