What does gel electrophoresis separate?
Answer and explanation
Correct answer: D. DNA fragments
- Step 1: DNA is negatively charged. Step 2. Fragments move to the positive electrode, and smaller ones move faster. Answer: DNA fragments. Why not the others: these are not separated in this way.
Practise more Genetics, Evolution and Biotechnology.
Free questions with an explanation for every one, and full timed Cambridge A-Level mock tests.
More Genetics, Evolution and Biotechnology questions
- What term describes the different forms of a gene found at the same locus on a chromosome?
- Two heterozygous parents (Bb) have children. B is dominant over b. What is the probability that a child shows the recessive phenotype?
- In a test cross, an organism showing the dominant phenotype is crossed with a homozygous recessive. What does a 1:1 ratio of offspring show?
- A cross of two dihybrid heterozygotes (AaBb x AaBb) with independent assortment gives which phenotype ratio?
- Cystic fibrosis is caused by a recessive allele. Two unaffected parents have an affected child. What are the genotypes of the parents?
- What is meant by codominance?