Okay. So this question says, what is an allele? So is it, a, a nucleotide variant? Is it, b, different variants of a gene? Is it, c, approach protein, or, d, a codon? So we know, I mean, even if you don't know what allele is, you know it has something to do with genes and genetics. So it's likely not a protein and it's likely not a codon. Right? Because, codons are 3 nucleotide combinations that code for proteins. The c and d, you can automatically, mark out. Now you probably know it's some type of variant and so a and b are a little confusing, whereas a says it's a nucleotide variant, which is the keyword here, and then b says it's a variant of a gene. An allele is a variant of a gene, a nucleotide variant would be like something like a, t, c, g, u, and we know that an allele has nothing to do with the individual nucleotide, So a is not the answer, so the answer here is b, an allele is a different variant of a gene. So with that, let's move on.

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

1. Introduction to Genetics

Fundamentals of Genetics

Genetics

1. Introduction to Genetics

Fundamentals of Genetics

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Multiple Choice

What is an allele?

A nucleotide variant

Different variants of a gene

Proteins

Codon

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Verified step by step guidance

Understand the concept of a gene: A gene is a segment of DNA that contains the instructions for building a specific protein or set of proteins.

Define an allele: Alleles are different versions or variants of a gene. They can result in different traits or characteristics in an organism.

Explore how alleles arise: Alleles can arise due to mutations in the DNA sequence of a gene, leading to variations in the nucleotide sequence.

Consider the impact of alleles: Different alleles can lead to variations in phenotypes, such as eye color or blood type, depending on which alleles are inherited from the parents.

Distinguish alleles from other genetic terms: Unlike proteins, which are the products of gene expression, alleles are variations of the gene itself. Codons are sequences of three nucleotides that correspond to specific amino acids, not variations of genes.