Genetics and Inheritance Flashcards
1
Q
what is DNA
A
the genetic material found in the chromosomes in the nuclei of cells
2
Q
where is DNA found
A
nucleus
3
Q
what is a chromosome
A
a string of genes/DNA
4
Q
what is the shape of DNA
A
double helix
5
Q
what are the 4 bases
A
Adenine
Cytosine
Guanine
Thymine
6
Q
what are the complementary bases
A
AT
CG
7
Q
what holds the DNA strands together
A
weak hydrogen bonds
8
Q
DNA is a _________ made up of __________
A
polymers monomer
9
Q
what is a DNA monomer called
A
a nucleotide
10
Q
what is a nucleotide made up of
A
phosphate
sugar
base
11
Q
what is the biggest molecule in nucleotide
A
sugar
12
Q
what are the 3 steps to extracting DNA from fruit
A
- grind fruit to separate cells
- add detergent to break open the cell membranes
- add ice-code alcohol so that the DNA precipitates out
13
Q
who discovered inheritance
A
Gregor Mendel
14
Q
describe Mendels experiment
A
- Mendel created pure bread pees that would always produce the same offspring when bred
- he bred tall peas with dwarf spread and discovered that all the offspring were tall
- he discovered that the tall gene was dominant and the short gene was recessive
15
Q
what is a game
A
a sex cell