Unit 2 - The human body - genetics

Question 1

What is the scientific study of heredity called?

Answer 1

genetics - how particular traits are transmitted from parents to offspring

Question 2

Genetic makeup of the person is called?

Answer 2

genotype

Question 3

Outward, physical manifectation of a persons genotype e.g. brown hair

Answer 3

phenotype

Question 4

Distinguishing characteristics are called?

Answer 4

traits - passed on from parents to children thru their genes

Question 5

Chemical name for the molecule that carries genetic instructions in us.

Answer 5

DNA - deoxyribonucleic Acid.

Question 6

DNA is composed of 4 different chemical bases (building blocks) - these are strung 2gether in 2 long strings called?

Answer 6

The double helix

Question 7

What is one of two or more versions of a gene called?

Answer 7

allele-we inherit an allele from each parent for each gene. These determine which genetic traits we inherit.

Question 8

position of a gene on a chromosome is called?

Answer 8

Locus

Question 9

The full collection of genes needed to produce a human being is called?

Answer 9

human genome

Question 10

What is a permanent change in the DNA sequence of a gene called?

Answer 10

Mutation