Genetics

Question 1

The study of heredity. ________ involves studying how traits are passed from parents to offspring.

Answer 1

Genetics

Question 2

The passing of traits from parents to offspring.

Answer 2

Heredity

Question 3

The passing of traits from parents to offspring.

Answer 3

Traits

Question 4

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

Answer 4

Chromosomes

Question 5

___ is a molecule made up of nucleotides that contains genetic information for cell growth, division and function.

Answer 5

DNA

Question 6

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

Answer 6

Gene

Question 7

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

Answer 7

Alleles

Question 8

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

Answer 8

Dominant

Question 9

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

Answer 9

Recessive

Question 10

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

Answer 10

Genotype

Question 11

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

Answer 11

Phenotype