Lesson 2 Chromosomes and Inheritance Topic 4

Genes are ...

• That is hidden whenever the dominant allele is present

• Segment of DNA on chromosome that control a trait or characteristic

• A number of how an event occur

• An organism that has two different alleles for a trait

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Dominant alleles are alleles whose trait ......... shows up when the alleles is present.

• always

• never

• sometimes

• usually

Different forms of a gene

• Punnett square

• Gene

• Allele

• Homozygous

Tags

NGSS.HS-LS3-1

Alleles whose trait always shows up when the allele is present

• Dominant alleles

• Recessive alleles

• Phenotype

• Genotype

Tags

NGSS.HS-LS3-1

Alleles that are hidden whenever the dominant allele is present

• Dominant alleles

• Recessive alleles

• Homozygous

• Heterozygous

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is HOMOZYGOUS?

• AA or aa

• Aa

• Organism that has identical alleles for a trait

• Organism that has two different alleles for a trait

What is HETEROZYGOUS?

• AA or aa

• Aa

• Organism that has identical alleles for a trait

• Organism that has two different alleles for a trait

______________ is a diagram that can be used to predict the genotypes and phenotypes resulting from a genetic cross.

• Punnett square

• Square of Puns

• Genetic Square

An organism's physical appearance or visible trait.

• Genotype

• Phenotype

Tags

NGSS.MS-LS4-2

An organism's genetic makeup or alleles.

• Genotype

• Phenotype

Tags

NGSS.HS-LS3-2