Genetics vocab part 1

Genes

• sections of DNA that have specific instructions for producing a certain characteristic
• different forms of a gene that determine a trait
• threadlike structures made of DNA molecules that contain the genes
• An allele that is masked when a dominant allele is present

Alleles

• different forms of a gene that determine a trait
• Passing of traits from parents to offspring.
• An organism that has TWO IDENTICAL alleles for a trait; two dominant OR two recessive
• A chart that shows all the possible combinations of alleles that can result from a genetic cross

Heredity

• Passing of traits from parents to offspring.
• different forms of a gene that determine a trait
• sections of DNA that have specific instructions for producing a certain characteristic
• A characteristic that an organism can pass on to its offspring through its genes

Tags

NGSS.MS-LS3-2

Chromosomes

• threadlike structures made of DNA molecules that contain the genes
• different forms of a gene that determine a trait
• A characteristic that an organism can pass on to its offspring through its genes
• An organism's physical appearance, or visible traits.

Trait

• A characteristic that an organism can pass on to its offspring through its genes
• different forms of a gene that determine a trait
• threadlike structures made of DNA molecules that contain the genes
• An organism's physical appearance, or visible traits.

Tags

NGSS.MS-LS4-4

Homozygous OR Purebred

• An organism that has TWO IDENTICAL alleles for a trait; two dominant OR two recessive
• An organism that has two DIFFERENT alleles for a trait; one dominant, one recessive
• the state in which two genetic traits are fully expressed and NEITHER dominates

Genotype

• An organism's genetic makeup, or allele combinations.
• An organism's physical appearance, or visible traits.

Tags

NGSS.MS-LS3-1

NGSS.MS-LS3-2

Phenotype

• An organism's physical appearance, or visible traits.
• An organism's genetic makeup, or allele combinations.

Tags

NGSS.MS-LS4-2

Punnet Square

• A chart that shows all the possible combinations of alleles that can result from a genetic cross
• Describes a trait that covers over, or dominates, another form of that trait
• An allele that is masked when a dominant allele is present
• Scientific study of heredity.

Tags

NGSS.HS-LS3-2

Dominant

• Describes a trait that covers over, or dominates, another form of that trait
• An allele that is masked when a dominant allele is present
• the state in which two genetic traits are fully expressed and NEITHER dominates