The polytene chromosome was first discovered in the salivary glands of the larvae of fruit flies (Drosophila melanogaster). These chromosomes have characteristic banding patterns due to repeated DNA strands that have replicated side by side.
The short sex chromosome in fruit flies, known as the Y chromosome, carries genes related to male traits and fertility. It determines the sex of the offspring when paired with an X chromosome. In evolutionary terms, the Y chromosome has undergone significant degeneration, leading to a size reduction and loss of genetic material compared to the X chromosome.
The X chromosome is one of the two sex-determiningchromosomes in many animal species, including mammals (the other is the Y chromosome). It is a part of the XY sex-determination system and X0 sex-determination system. The X chromosome was named for its unique properties by early researchers, and this resulted in its counterpart being named the Y chromosome for the next letter in the alphabet when it was discovered later.
The Xist gene was discovered by Catherine D. Ballabio and Alan P. Wolffe in 1991. They identified it as a key player in X-chromosome inactivation in female mammals.
Chromosome # + pso the short arm of Chromosome 11 is referred to as 11p
Hermann Henking
Gregor Mendel
I think it's Theador Schwann ..Not sure .....
The polytene chromosome was first discovered in the salivary glands of the larvae of fruit flies (Drosophila melanogaster). These chromosomes have characteristic banding patterns due to repeated DNA strands that have replicated side by side.
When th chromosome was discovered, it was given that name for a reason. Translated from Greek to German, it was khromasoma. When translated to English, it means color body.
The short sex chromosome in fruit flies, known as the Y chromosome, carries genes related to male traits and fertility. It determines the sex of the offspring when paired with an X chromosome. In evolutionary terms, the Y chromosome has undergone significant degeneration, leading to a size reduction and loss of genetic material compared to the X chromosome.
The X chromosome is one of the two sex-determiningchromosomes in many animal species, including mammals (the other is the Y chromosome). It is a part of the XY sex-determination system and X0 sex-determination system. The X chromosome was named for its unique properties by early researchers, and this resulted in its counterpart being named the Y chromosome for the next letter in the alphabet when it was discovered later.
It's very rare it happens when chromosome #5 is out of place and goes missing.
by some person
Potentially the most important genetic link was discovered in the early 1990s on chromosome 19. A gene on this chromosome, called apoE, codes for a protein involved in transporting lipids into neurons.
The Xist gene was discovered by Catherine D. Ballabio and Alan P. Wolffe in 1991. They identified it as a key player in X-chromosome inactivation in female mammals.
In 1994 Dr. John Wasmuth and his colleagues discovered that a mutation of the fibroblast growth factor receptor-3 (FGFR3) gene on human chromosome 4 causes achondroplasia.