Genetics

Question 1

Genetics

Answer 1

Is the study of heredity. Genetics involves studying how traits are passed from parents to offspring.

Question 2

Heredity

Answer 2

Is the passing of traits from parents to offspring.

Question 3

Traits

Answer 3

Are the characteristics of an organism. Examples are eye color, freckles, height or dimples.

Question 4

Chromosome

Answer 4

Chromosomes are thread-like structures in the nucleus of cells that carry genetic information. A chromosome consists of a long strand of DNA containing many genes.

Question 5

DNA

Answer 5

Deoxyribonucleic acid (DNA) is a molecule made up of nucleotides that contains genetic information for cell growth, division and function.

Question 6

Gene

Answer 6

A gene is a segment on a chromosome that determines a specific trait. Genes are the units of heredity.

Question 7

Allele

Answer 7

A different form or version of a gene - alleles usually occur in pairs.

Question 8

Dominant

Answer 8

A gene variant that is expressed more strongly than other versions of the same gene - the dominant allele masks the effect of the recessive allele.

Question 9

Recessive

Answer 9

A gene that is masked by a dominant gene, and is only expressed when two copies of the gene are present.

Question 10

Genotype

Answer 10

The genetic make up or code of an organism - Ex: BB, Bb, bb.

Question 11

Phenotype

Answer 11

The observable traits or physical appearance of an organism - Ex: brown eyes or blue eyes.