Table of contents

1. Introduction to Genetics51m
2. Mendel's Laws of Inheritance3h 37m
3. Extensions to Mendelian Inheritance2h 41m
4. Genetic Mapping and Linkage2h 28m
5. Genetics of Bacteria and Viruses1h 21m
6. Chromosomal Variation1h 48m
7. DNA and Chromosome Structure56m
8. DNA Replication1h 10m
9. Mitosis and Meiosis1h 34m
10. Transcription1h 0m
11. Translation58m
12. Gene Regulation in Prokaryotes1h 19m
13. Gene Regulation in Eukaryotes44m
14. Genetic Control of Development44m
15. Genomes and Genomics1h 50m
16. Transposable Elements47m
17. Mutation, Repair, and Recombination1h 6m
18. Molecular Genetic Tools19m
- Genetic Cloning
  9m
- Methods for Analyzing DNA
  9m
19. Cancer Genetics29m
- Overview of Cancer
  21m
- Cancer Mutations
  7m
20. Quantitative Genetics1h 26m
21. Population Genetics50m
- Hardy Weinberg
  19m
- Allelic Frequency Changes
  31m
22. Evolutionary Genetics29m

2. Mendel's Laws of Inheritance

Monohybrid Cross

Genetics

2. Mendel's Laws of Inheritance

Monohybrid Cross

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Multiple Choice

Which of the following statements correctly describes a monohybrid cross?

It is a cross that involves two different traits simultaneously.

It is a cross that always results in a 1:1 phenotypic ratio in the F2 generation.

It is a cross between individuals that are homozygous for all traits.

It is a genetic cross that examines the inheritance of a single trait with two contrasting alleles.

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Verified step by step guidance

Understand the definition of a monohybrid cross: it involves the study of inheritance of a single trait that has two contrasting alleles.

Recognize that a monohybrid cross typically involves parents that are homozygous for different alleles of one gene (e.g., AA x aa).

Know that the F1 generation from this cross will be heterozygous (e.g., Aa) for that single trait.

Understand that when the F1 individuals are crossed (Aa x Aa), the F2 generation shows a phenotypic ratio typically of 3:1, not 1:1, for dominant and recessive traits.

Conclude that a monohybrid cross does not involve two different traits simultaneously (that would be a dihybrid cross), nor does it always produce a 1:1 ratio, and it does not require parents to be homozygous for all traits.