What is strange about Drosophila chromosomes?

05/22/2020 Off By admin

What is strange about Drosophila chromosomes?

THE dot chromosome, or F element, of Drosophila melanogaster is unique in that it has many characteristics of heterochromatin, yet maintains a typical euchromatic gene density in its 1.3-Mb long arm. The basic karyotype of Dipterans consists of six distinct genomic elements, named A through F by Muller (1940).

How do Drosophila detect light?

The mosaic arrangement of photoreceptors containing different rhodopsins, similar to that in human retina, suggests Drosophila has color vision. Besides the dorsal rim, the photoreceptors from different regions of retina are responsible for detecting distinct wavelengths and directions of polarized light.

What is the genotype of Drosophila?

Drosophila, are diploid, with two sets of chromosomes and therefore two alleles at each autosomal locus. If both alleles are identical, the individual is a homozygote and is described as homozygous. If the alleles differ from each other, the individual is a heterozygote and is described as heterozygous.

What organism has the most chromosomes?

tongue fern Ophioglossum reticulatum
The organism with the highest chromosome number recorded in to date is estimated to be 1,440 (or 720 pairs) found in the adder’s tongue fern Ophioglossum reticulatum.

Can Fly see Colours?

Flies have limited color vision. Each color has its own wave frequency, but flies have only two kinds of color receptor cells. This means they have trouble distinguishing between colors, for instance discerning between yellow and white.

Can Drosophila see color?

The color vision system of Drosophila spp. is thought to be highly conserved38. melanogaster, inner photoreceptors R7 and R8 are sufficient to distinguish between blue and green and provide limited color discrimination over a wider range37. Four types of opsins are expressed on the inner photoreceptors R7 and R8.

What thing has the most chromosomes?

fern Ophioglossum reticulatum