7th grade Ch5&6 Heredity and Genetics

An organism with 2 identical alleles for a trait, such as TT (tall), is said to be _____.

• codominant

• hybrid

• homozygous

• heterozygous

Tags

NGSS.HS-LS3-1

Gregor Mendel hypothesized from his experiments that each trait is made up of how many factors?

• one

• two

• three

• four

The branch of science that studies heredity is ____.

• Geology

• Physics

• Genetics

• Physics

Tags

NGSS.MS-LS3-1

Where do the factors for a trait come from?

• unrelated organisms

• siblings

• mother and father

• offspring

Tags

NGSS.MS-LS1-5

Physical characteristics of an organism such as height & seed color are called ____.

• hybrids

• alleles

• genes

• traits

An organism with 2 different alleles for a trait, such as Tt (tall), is said to be ____.

• purebred

• codominant

• heterozygous

• homozygous

Tags

NGSS.HS-LS3-1

An organism's genetic makeup or allele combinations is its ____.

• phenotype

• codominance

• genes

• genotype

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

An organism's physical appearance or visible traits is its ____.

• genotype

• phenotype

• genes

• codominance

An allele whose trait is masked in the presence of a dominant allele is _____.

• dominant

• recessive

• purebred

• trait

What symbol is most often used to represent a dominant trait?

• a small letter

• a letter in italics

• a letter in Latin

• a capital letter