Mendelian Genetics Review

The instruction of one allele covers up the instruction

of the other allele in a homologous pair. Symbolized by a capital letter.

• Recessive Allele

• Dominant Allele

• Heredity

• Trait

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NGSS.HS-LS3-1

A genotype where one dominant and one recessive allele was passed on from both parents for one trait.

Bb Aa Tt Ll

• Allele

• Homozygous Dominant

• Homozygous Recessive

• Heterozygous

Tags

NGSS.HS-LS3-1

The observable traits dictated by the genotype

• Phenotype

• Genotype

• Homozygous Recessive

• Homozygous Dominant

Tags

NGSS.HS-LS3-1

During meiosis and gamete formation, homologous (paired up) alleles split up

• Phenotype

• Law of Segregation

• Genotype

• Dihybrid Cross

Tags

NGSS.HS-LS3-1

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During meiosis, the homologous pairs of chromosomes and the matching alleles are lined up independently.

Offspring are a mix of maternal genes and paternal genes.

This increases genetic variation.

• Homozygous Dominant

• Law of Segregation

• Crossing Over

• Independent Assortment

Tags

NGSS.HS-LS3-2

The Italian monk/scientist who first showed

the principles of genetics

• Watson and Crick

• Linnaeus

• Darwin

• Mendel

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NGSS.HS-LS3-1

NGSS.HS-LS3-2

If you are homozygous dominant, the genotype would be 

• AA
• aa
• Aa

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NGSS.HS-LS3-1

Gregor Mendel's "P" generation consisted of purple flower plants crossed with white flower plants. What were the results of this cross?

• All purple flower offspring
• All white flower offspring
• Some purple flowers and some white flowers

Tags

NGSS.HS-LS3-1

The letters on the TOP AND SIDE of a punnett square represent ______________.

• The combination of alleles in offspring.
• The possible alleles given by the parents following meiosis.
• The genotype and phenotype of offspring.
• The results of genetic mutations in offspring.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The dominant trait in this punnett square is

• yellow pea seeds
• green pea seeds
• there is no dominant seed

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NGSS.HS-LS3-1

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