Genes

Forensic scientists study ______ to help figure out crimes.

• DNA

• plants

• cells

• fossils

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-2

Genetic traits are passed from ________ to ________.

• parent; offspring

• chromosomes; traits

• DNA; genes

• offspring; parents

Tags

NGSS.HS-LS3-1

Differences in traits are called _________ and explain why siblings don't look exactly alike.

• mutations

• variations

• traits

• evolution

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The alleles that an organism has

• genotype

• phenotype

• chromosome

• recessive

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The observable expression of a trait

• phenotype

• genotype

• chromosome

• allele

Tags

NGSS.HS-LS4-3

When an organism has two of the same alleles, it is called

• homozygous

• heterozygous

• recessive

• dominant

When an organism has two different alleles, it is called

• homozygous

• heterozygous

• recessive

• dominant

Which is Heterozygous?

• Tt

• BB

• ff

• Dominant

Which is homozygeous?

• Tt

• BB

• Ff

• Blue

Two different alleles for the same trait.

• Heterozygous

• Homonzygous

• Dominant