DNA And RNA Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

What is the structure of DNA

A

Double helix

Held together by phosphate backbone, sugar (deoxyribose) and 4 bases (A,T, C&G)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the structure of RNA

A

Ribose sugar, 4 bases but thymine is replaced by uracil
Short and unstable
Single stranded

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Name the 4 bases in DNA

A

adenine
Thymine
Cytosine
Guanine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Name the 4 bases in RNA

A

adenine
Uracil
Cytosine
Guanine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is a gene

A

Made up of DNA

Basic physical and functional unit of heredity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is a chromosome

A

Contains all the genetic material of an organism

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How are chromosomes involved in sex determination

A

X and Y chromosomes also known as the sex chromosomes are used to determined the sex of an individual.
Females inherit an X chromosome from the father for an XX genotype however males inherit a Y chromosome from the father for a XY genotype. (Mother’s can only pass on X chromosomes)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How many chromosomes do humans normally have

A

46

How well did you know this?
1
Not at all
2
3
4
5
Perfectly