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Monohybrid Cross and Mendel's Law

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Questions and Answers

What is the phenotypic ratio of tall to dwarf plants in the F2 generation?

3:1 (correct)

1:2

1:3

2:1

What are the genotypes present in the F1 generation?

Tt and tt

Tt only (correct)

TT and tt

TT, Tt, and tt

What are the genotypic ratios in the F2 generation of a monohybrid cross?

2:1

3:1

1:2:1 (correct)

1:1

Which of the following statements is true regarding the F1 generation?

<p>All plants are tall.</p> Signup and view all the answers

What does Mendel's law indicate about the offspring of a monohybrid cross?

<p>Offspring will show both dominant and recessive traits.</p> Signup and view all the answers

Study Notes

Monohybrid Cross: Parental Generation

Tall (TT) and dwarf (tt) plants were crossed as the parental generation
Tall plants are homozygous dominant (TT)
Dwarf plants are homozygous recessive (tt)

Monohybrid Cross: F1 Generation

F1 generation had all Tt genotypes
All F1 generation plants were tall

Monohybrid Cross: F2 Generation

F1 generation was self-pollinated
F2 generation produced a 3:1 phenotype ratio of tall to dwarf plants
F2 generation produced a 1:2:1 genotype ratio of TT:Tt:tt

Monohybrid Cross: Checkerboard

The checkerboard illustrates the genotypes produced from the F1 self-pollination
TT, Tt, and tt genotypes are shown in the checkerboard

Mendel's Law of Segregation

This experiment demonstrates Mendel's Law of Segregation
The parents' alleles separate during gamete formation, ensuring that offspring inherit one allele from each parent.

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Description

Explore the principles of monohybrid crosses through the example of tall and dwarf plants. Understand the genotypic and phenotypic ratios in the F1 and F2 generations, and how Mendel's Law of Segregation applies to this genetic experiment.