genetics

Question 1

where are chromosomes located?

Answer 1

in the nucleus of celss

Question 2

what is a females sex-chromosome?

Answer 2

XX

Question 3

what is a males sex-chromosome?

Answer 3

XY

Question 4

how many chromosomes in a normal human

Answer 4

23 pairs

Question 5

what is DNA?

Answer 5

nucleic acid, consisting of nucleotides

Question 6

what is T (Thymine) paired with?

Answer 6

A (Adenine)

Question 7

what is G (Guanine) paired with?

Answer 7

C (Cytosine)

Question 8

what is DNA made up of?

Answer 8

• 5-carbon sugar called deoxyribose, a phospate group, an a nitrogenous base.

Question 9

difference between autosomes and sex-chromosomes

Answer 9

autosomes are all chromosomes other than sex chromosomes

Question 10

what does reccesive gene mean?

Answer 10

less likely to be carried through

Question 11

what does dominant gene mean?

Answer 11

most likely to be carried through (CAPITAL LETTER)

Question 12

effects of mutation

Answer 12

Can have an affect on many genes along the chromosome

Question 13

what happens if a human has an extra chromosome?

Answer 13

causes down syndrome

Question 14

mitosis

Answer 14

the process of making new body cells

Question 15

meiosis

Answer 15

creates egg and sperm cells

Question 16

what are autosomes

Answer 16

every chromosomes apart from sex chromosomes

Question 17

what are sex chromosomes

Answer 17

your gender

Question 18

what is pedigrees used for

Answer 18

to show patterns of inheritance through generations of families

Question 19

what is the opossite of A

Answer 19

T

Question 20

what is the opposite of C

Answer 20

G