Genetics

Question 0

Sex-linked genes

Answer 0

A gene that is Carried on the X or Y chromosome

Question 1

Purebred

Answer 1

The offspring of many generations that have the same traits

Question 2

Sex chromosomes

Answer 2

A pair of chromosomes carrying genes that determine weather a person is male or female

Question 3

Carrier

Answer 3

A person who has one recessive allele for a trait,but does not have that trait

Question 4

Karyotype

Answer 4

A picture of all the chromosomes in a cell arranged in pairs

Question 5

Pedigree

Answer 5

A chart or “family tree” that tracks which members of a family have a particular trait

Question 6

Genetic disorder

Answer 6

An abnormal condition that a person inherits through genes or chromosomes

Question 7

DNA

Answer 7

Deoxyribonucleic acid; the genetic material that carries information about an organism and is passed through parent to offspring

Question 8

Heredity

Answer 8

The passing of traits from parents to offspring

Question 9

Replication

Answer 9

The process by which a cell makes a copy of the DNA in its nucleus

Question 10

Mutation

Answer 10

A change in a gene or chromosome

Question 11

Punnett square

Answer 11

A chart that shows all of the possible combinations of alleles that can result from a genetic cross

Question 12

Mitosis

Answer 12

The stage of the cell cycle during which the cell’s nucleus divides into two new nuclei and one copy of the DNA is distributed into each daughter cell

Question 13

Trait

Answer 13

A characteristic that an organism can pass on to its offspring through its genes

Question 14

Meiosis

Answer 14

The process that occurs in the formation of sex cells (sperm and egg) by which the number of chromosomes is reduced by half

Question 15

Recessive allele

Answer 15

An allele that is masked when a dominant allele is present

Question 16

Gene

Answer 16

The set of information that controls a trait; a segment of DNA on a chromosome that codes for a specific trait

Question 17

Dominant allele

Answer 17

An allele whose trait always shows up in the organism when the allele is present

Question 18

Genetics

Answer 18

The scientific study of heredity

Question 19

Allele

Answer 19

The different forms of a gene

Question 20

Phenotype

Answer 20

An organism’s physical appearence, or visible traits

Question 21

Probability

Answer 21

A number that describes how likely it is that an event will occur

Question 22

Hybrid

Answer 22

An organism that has two different alleles for a trait; an organism that is heterozygous for a particular trait

Question 23

Genotype

Answer 23

An organisms genetic makeup or allele combinations

Question 24

Chromosomes

Answer 24

A doubled rod of condensed chromatin; contains DNA that carries genetic information