Yr 11 MOCKS

Question 1

Chromosome

Answer 1

Chromosomes are thin strands of DNA (deoxyribonucleic acid).

They are subdivided into genes.

In most cells, chromosomes are located in functional pairs in the nucleus.

Question 2

Gene

Answer 2

A gene is a short length of DNA found on a chromosome that codes for a particular characteristic or protein.

Question 3

Genome

Answer 3

The genome of an organism is the entire genetic material of that organism.

Question 4

Alleles

Answer 4

Different forms of the same gene sometimes referred to as variants.

Question 5

Dominant allele

Answer 5

The phenotype will be apparent in the offspring even if only one of the alleles is inherited.

Question 6

Recessive allele

Answer 6

A recessive allele is only expressed if two copies are present

Question 7

Homozygous

Answer 7

This is where an individual with two identical alleles for a characteristic, for example, BB or bb

Question 8

Heterozygous

Answer 8

This is where an individual with different alleles present or genetic makeup of an individual regarding a particular characteristic, for example, Bb or bb.

Question 9

Phenotype

Answer 9

This describes the physical appearance of an individual regarding a particular characteristic, for example, black fur or brown fur in a mouse.

Question 10

Genotype

Answer 10

This describes the alleles present or genetic makeup of an individual regarding a particular characteristic, for example, Bb or bb

Question 11

Genetic screening

Answer 11

Genetic testing designed to identify individuals in a given population who are at higher risk of having or developing a particular disorder, or carrying a gene for a particular disorder.

Question 12

DNA Structure

Answer 12

A, G, C, T