Explore: Chromosomes Polytènes

Polytene chromosomes are large chromosomes which have thousands of DNA strands. They provide a high level of function in certain tissues such as salivary

eukaryotic chromosomes display a complex three-dimensional structure that has a significant role in transcriptional regulation. Normally, chromosomes are visible

In a pericentric inversion, similar imbalanced chromosomes are produced. The recombinant chromosomes resulting from these crosses include deletions and

of a karyotype, wherein chromosomes are generally organized in pairs, ordered by size and position of centromere for chromosomes of the same size. Karyotyping

complete sets of chromosomes in a cell, and hence the number of possible alleles for autosomal and pseudoautosomal genes. Here sets of chromosomes refers to

accessory chromosome) Supernumerary chromosome A chromosome/B chromosome Lampbrush chromosome Polytene chromosome Dinoflagellate chromosomes Homologous

technique, they studied the polytene chromosomes and discovered that all the wild populations were polymorphic for chromosomal inversions. All the flies

accessory chromosome) Supernumerary chromosome A chromosome/B chromosome Lampbrush chromosome Polytene chromosome Dinoflagellate chromosomes Homologous

included only 46 chromosomes. The great apes have 48 chromosomes. Human chromosome 2 was formed by a merger of ancestral chromosomes, reducing the number

advanced techniques, looked at the chromosomes in human somatic cells and found 46 chromosomes and the human chromosome number was finally revised. In 1934