Biology Review

A segment of DNA that has the ability to code for a specific trait.

• gene

• allele

• chromosome

• chromatid

Tags

NGSS.HS-LS3-1

This type of allele is expressed whether there are one or two copies present.

• dominant

• recessive

• homozygous

• heterozygous

A variety or form of a gene.

• trait

• gene

• allele

• DNA

Long strands of DNA are called

• DNA
• Chromosome
• Alleles
• Phenotype

______ is the set of genes possessed by someone

• DNA
• Chromosome
• Genotype
• Phenotype

Chromosomes are made of

• DNA
• RNT
• WWE
• DMA

B=Blonde Hair b=Brown Hair
If a person was BB they would have

• Blonde Hair
• Brown Hair

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

B=Blonde Hair b=Brown Hair
If a person was Bb they would have

• Blonde Hair
• Brown Hair

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Recessive Traits show up 

• Always
• Only when there are two

Dominant Traits show up 

• Always
• Only when there are two

Tags

NGSS.HS-LS3-1