What do you mean by ClB marker stock in Drosophila?
Quick Reference. A technique invented by H. J. Muller and used for the detection of sex-linked lethal and viable mutations in Drosophila melanogaster. The name is derived from the X chromosome used. It contains a Crossover suppressor (an inversion), a lethal, and the dominant marker Bar eye.
What is CIB technique?
CIB Method: This method was developed by Muller for detection of induced sex linked recessive lethal mutations in Drosophila male. This method was invented by Muller and used for the unequivocal demonstration of mutagenic action of X rays.
What is the drawback of CIB method?
Males containing CIB chromosome will die due to the effect of lethal genes, whereas norm ill males and females both normal and with CIB will survive.
What is CLB level?
The Canadian Language Benchmarks (CLB) describe 12 levels of ability in each of four different language skills – Listening, Speaking, Reading and Writing. The CLB are used in Canada to describe the language ability of people who are learning English.
What are different methods of detection of mutation?
Once mutations have been defined they can be searched for repeatedly by methods referred to as diagnostic methods. Such methods include allele-specific oligonucleotide hybridization, allele-specific amplification, ligation, primer extension and the artificial introduction of restriction sites.
What are the five types of mutation?
- Germline mutations occur in gametes. Somatic mutations occur in other body cells.
- Chromosomal alterations are mutations that change chromosome structure.
- Point mutations change a single nucleotide.
- Frameshift mutations are additions or deletions of nucleotides that cause a shift in the reading frame.
Why transposons are called jumping genes?
Transposons are a group of mobile genetic elements that are defined as a DNA sequence. Transposons can jump into different places of the genome; for this reason, they are called jumping genes.