U2AOS1 Inheritance + Genetics

Question 1

What are the 4 nitgrogenous bases

Answer 1

Adenine, guanine, cytosine, thymine

Question 2

Chromosome

Answer 2

Long molecule of DNA

Question 3

Genes

Answer 3

Sections of a chromosome that code for individual traits

Question 4

Alleles

Answer 4

Alternative variations of a gene

Question 5

Non disjunction

Answer 5

When chromosomes dont spilt properly during meiosis, meaning one cell has 24 chromosomes, the other has 22

Question 6

Metaphase

Answer 6

Chromosomes line up in single file

Question 7

Anaphase

Answer 7

Chromatids seperate

Question 8

What is epigenetics

Answer 8

Study of how phenotype can be affected by the interactions of DNA with other molecules

Question 9

X linked inheritance characteristics

Answer 9

Dominant- if male is affected his mother and daughters will also be affected
Recessive- if female is affected, father and all sones must also be affected

Question 10

Y linked inheritance

Answer 10

Male restricted and dad will pass on to all sons

Question 11

What are eukaryotic chromosomes made from

Answer 11

Nucleic acids and proteins