Cytologists had been studying chromosome behavior since the late 19th century. Why did it take until 1956 to figure out the correct human chromosome number, thanks to Joe Hin Tjio and Albert Levan?

Centromere placement can also be used to identify the gross morphology, or shape, of chromosomes. For example, metacentric chromosomes, such as chromosomes 1, 3, and 16, have p and q arms of ...

She also became the first to describe the morphology of the ten maize chromosomes, basically their form and structural relationships, which then allowed her to discover more about the chromosomes.

For years, we have studied various aspects of these frogs – their morphology, physiological wellbeing ... which are DNA ...

Each human body cell contains 46 chromosomes. These can be arranged into 23 pairs. Each chromosome in a pair carries the same types of genes. The 23rd pair are the sex chromosomes: In females ...

Klinefelter syndrome is a genetic condition in which a boy is born with an extra X chromosome. Instead of the typical XY chromosomes in men, they have XXY, so this condition is also called XXY ...

Three kinds of telocentric chromosomes may be expected to arise and one of them will have a centromere similar to that of a metacentric chromosome. (2) Examples of telocentric chromosomes are listed ...

All men and only men have a Y chromosome. This biological fact allows us to trace back in time a direct, largely unchanged genetic line of inheritance from father to son. Every person, male or ...

Increased risk for autism appears to be linked to the Y chromosome, a study has found, offering a new explanation for the greater prevalence of autism in males. Increased risk for autism appears ...

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The microscopic animal has radiation-resistant genes that could have applications in space, crops and medicine, Chinese researcher says A microscopic creature, known as the most diehard animal on ...

The internal structure of words and the segmentation into different kinds of morphemes is essential to the two basic purposes or morphology: the creation of new words and the modification of existing ...