Fruit Fly Genetics - Single Allele Trait

In fruit flies, vestigial (gg) wings are a recessive trait. Flies with this phenotype have tiny wings and cannot fly. Complete the chart: Genotype: GG, Phenotype: Wings; Genotype: ____, Phenotype: Wings; Genotype: gg, Phenotype: Vestigial wings.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In fruit flies, vestigial (gg) wings are a recessive trait. Flies with this phenotype have tiny wings and cannot fly. A heterozygous fly is crossed with a vestigial winged fly. What are the genotypes of the parents? ____ x ____. Show the crosses with a Punnett square. What percentage will have wings? ______. What percentage will be vestigial winged? ______.

• Gg x gg; 50% will have wings, 50% will be vestigial winged.

• GG x gg; 100% will have wings, 0% will be vestigial winged.

• gg x gg; 0% will have wings, 100% will be vestigial winged.

• Gg x Gg; 75% will have wings, 25% will be vestigial winged.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

In fruit flies, vestigial (gg) wings are a recessive trait. Flies with this phenotype have tiny wings and cannot fly. Two heterozygous flies are crossed. What are the genotypes of the parents? ____ x ____. What percentage will have wings? ______. What percentage will be vestigial winged? ______.

• Gg x Gg; 75% will have wings; 25% will be vestigial winged

• GG x gg; 50% will have wings; 50% will be vestigial winged

• Gg x gg; 50% will have wings; 50% will be vestigial winged

• gg x gg; 0% will have wings; 100% will be vestigial winged

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

In fruit flies, vestigial (gg) wings are a recessive trait. Flies with this phenotype have tiny wings and cannot fly. A homozygous normal fly is crossed with one that has vestigial wings. What are the genotypes of the parents? ____ x ____. What percentage will have wings? ______. What percentage will be vestigial winged? ______.

• A) GG x gg; 100% will have wings; 0% will be vestigial winged.

• B) Gg x gg; 50% will have wings; 50% will be vestigial winged.

• C) gg x gg; 0% will have wings; 100% will be vestigial winged.

• D) GG x GG; 100% will have wings; 0% will be vestigial winged.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In fruit flies, vestigial (gg) wings are a recessive trait. Flies with this phenotype have tiny wings and cannot fly. A homozygous normal fly is crossed with a heterozygous fly. What are the genotypes of the parents? ___ x ____. What percentage will have wings? ______. What percentage will be vestigial winged? ______.

• Homozygous normal (GG) x Heterozygous (Gg); 100% will have wings; 0% will be vestigial winged.

• Homozygous normal (GG) x Homozygous recessive (gg); 50% will have wings; 50% will be vestigial winged.

• Heterozygous (Gg) x Heterozygous (Gg); 75% will have wings; 25% will be vestigial winged.

• Homozygous recessive (gg) x Heterozygous (Gg); 50% will have wings; 50% will be vestigial winged.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

2. A white eyed female is crossed with a red eyed male. How many offspring are: Female with white eyes: ____, Female with red eyes: ____, Male with red eyes: ____, Male with white eyes: ____.

• All offspring are female with white eyes

• All offspring are female with red eyes

• All offspring are male with red eyes

• All offspring are male with white eyes

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

3. A heterozygous red eyed female is crossed with a red eyed male. How many offspring are: Female with white eyes: ____, Female with red eyes: ____, Male with red eyes: ____, Male with white eyes: ____?

• A) Female with white eyes: 0, Female with red eyes: 2, Male with red eyes: 1, Male with white eyes: 1

• B) Female with white eyes: 1, Female with red eyes: 1, Male with red eyes: 1, Male with white eyes: 1

• C) Female with white eyes: 1, Female with red eyes: 2, Male with red eyes: 0, Male with white eyes: 1

• D) Female with white eyes: 0, Female with red eyes: 1, Male with red eyes: 2, Male with white eyes: 1

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

4. A homozygous red eyed female is crossed with a white eyed male. How many offspring are: Female with white eyes: ____, Female with red eyes: ____, Male with red eyes: ____, Male with white eyes: ____.

• Female with white eyes: 0, Female with red eyes: 50%, Male with red eyes: 50%, Male with white eyes: 0

• Female with white eyes: 25%, Female with red eyes: 25%, Male with red eyes: 25%, Male with white eyes: 25%

• Female with white eyes: 50%, Female with red eyes: 0, Male with red eyes: 0, Male with white eyes: 50%

• Female with white eyes: 0, Female with red eyes: 0, Male with red eyes: 100%, Male with white eyes: 0

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

5. A heterozygous red eyed female is crossed with a white eyed male. How many offspring are: Female with white eyes: ____, Female with red eyes: ____, Male with red eyes: ____, Male with white eyes: ____.

• 1. Female with white eyes: 0, Female with red eyes: 2, Male with red eyes: 1, Male with white eyes: 1

• 2. Female with white eyes: 1, Female with red eyes: 1, Male with red eyes: 1, Male with white eyes: 1

• 3. Female with white eyes: 1, Female with red eyes: 1, Male with red eyes: 0, Male with white eyes: 2

• 4. Female with white eyes: 2, Female with red eyes: 0, Male with red eyes: 2, Male with white eyes: 0

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3