A branch of genetics that is concerned with the study of the structure and function of the cell, especially the chromosomes.
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Why are certain aneuploidies more common?
Certain aneuploidies such as trisomy-21 (Downs syndrome), trisomy-18 (Edward syndrome), Turner syndrome (XO) etc are more common than others.
I had a vague thought that it is related to chromosome ...
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What are polytene bands, and why are they there?
Drosophila polytene chromosomes have been particularly useful in genetic research, as it made cytogenetic gene mapping possible with very little effort. This was primarily accomplished due to polytene ...
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Number of spindle fibres during Metaphase?
During metaphase, the chromosomes are arranged on the equatorial plate and are attached to spindle fibres. After S phase, can the cell be said to attain the configuration of 4n?
Also, during ...
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1answer
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Is ovum + ovum fertilization possible for human?
In humans is it possible to fertilize a ovum with another ovum from the same female subject?
I already found some works in which the ovum is fertilized by a somatic cell (see e.g. this ), but I am ...
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How does one measure the length of telomeres?
My questions are:
What techniques are available for doing so?
Are they destructive ?
What is their accuracy ?
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Finding the number of chromosomes of an organism
For a school project I need to find the number of chromosomes of an organism (specifically the adelie penguin, Pygoscelis adeliae). After several internet searches and a look through the encyclopedia ...
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202 views
X chromosome “weight”?
According to Wikipedia, the X chromosome has approximately 153 million base pairs, while the Y chromosome has only 60 million base pairs. Thus, the difference is roughly 93 million base pairs.
My ...
