Genetic Evolution

Use the diagram and description below to predict the type of selection that is occurring for tail length. (a)  

• Disruptive
• Directional
• Stabilizing
• Artificial

A heterozygous organism has (a)   .

• 2 recessive alleles
• No alleles
• 2 dominant alleles
• 1 dominant, 1 recessive allel

An organism’s physical appearance is its _____.

• chromosome

• allele

• genotype

• phenotype

A disadvantage of antibiotics is....

• speeds up human evolution

• kills bad bacteria

• they are not preventative

• cures of an infection

An organism that has either 2 dominant or 2 recessive alleles is said to be ____ for that trait.

• homozygous

• heterozygous

• genotype

• phenotype

What is a different version of a gene called?

• Allele

• Dominant

• Gene

• Nucleotide

A sequence of DNA that determines a trait is called?

• Allele

• Phenotype

• Nucleotide

• Gene

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

What type of cell accurately describes a bacteria cell?

• Plant

• Animal

• Eukaryote

• Prokaryote

Humans have __________________ the evolution of bacteria.

• sped up

• slowed down

• not had an impact on

Use the diagram and description below to predict the type of selection that is occurring for tail length.

• Disruptive

• Directional

• Stabilizing

• Artificial