DNA Flashcards
1
Q
what does DNA stand for?
A
deoxyribonucleic acid
2
Q
what is a phenotype?
A
a phenotype is a visible characteristic of a organism eg. blue eyes
3
Q
what is DNA?
A
DNA is a long list of chemical instructions on how to build a organism.
4
Q
how many chromosomes are there in a human body?
A
46 chromosomes (23 pairs)
5
Q
what do genes control?
A
genes control many of our characteristics
5
Q
A
5
Q
what is a gene?
A
a gene is a short section of a chromosome.
6
Q
how many chromosomes are there in human sperm/egg cells?
A
23 chromosomes
6
Q
A
6
Q
what are chromosomes made of?
A
proteins and DNA organized into genes
6
Q
what happens at fertilisation?
A
the sperm and egg unite in one of the fallopian tubes to form a zygote.
6
Q
where do you find chromosomes?
A
in the nucleus
7
Q
A
8
Q
A
9
Q
A
