Meiosis, Mendelian and non mendelian

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

Tags

NGSS.HS-LS3-2

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-LS3-2

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-LS3-2

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

The Italian monk/scientist who first showed

the principles of genetics

• Watson and Crick

• Linnaeus

• Darwin

• Mendel

Tags

NGSS.HS-LS3-1

If you are homozygous dominant, the genotype would be 

• AA
• aa
• Aa

In a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the genotype of any red-flowering plant resulting from this species?

• rr
• R
• RR
• RR or Rr

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

Which of the following is a phenotype?

• Aa
• red hair
• heterozygous
• DNA

A heterozygous long-tusked elephant is crossed with a homozygous recessive short-tusked elephant. What is the probability of the offspring having short tusks?

• 0%
• 25%
• 50%
• 75%

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

NGSS.HS-LS3-3