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Post Tagged with: "Chromosome"

Half-Male, Half-Female Cardinal Has a Rough Life

Half-Male, Half-Female Cardinal Has a Rough Life

The picture here shows this cardinal is kind of unusual split-sex gynandromorphy, because on its left side, it owns the bright red male plumage, but on its other half, it has the brownish-gray female plumage. In reality, we can see some natural gynandromorph ones such as butterflies, lobsters, and chickens. However, scientists […]

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Image credit: Deviant via shutterstock. Smoking is worse for men than women because it destroys Y chromosomes

Smoking Is Related with Loss of Y Chromosome from Cells

Public health authorities have launched the latest round of anti-smoking campaign, especially targeted on men, because the new discovery has demonstrated that smoking could erase the chromosomes which are capable of identifying genetic masculinity. Recently, Lars Fosberg and Jan P. Dumanski together with a team from UppsalaUniversity had addressed the issue […]

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A fertilized human egg Image credit: Wellcome Images.

Whence Life? Scientists Found Receptors Responsible For Fertilization

According to the latest research, it is reported that scientists have found the receptors which can make sperm and egg cells be linked together so as to create new life. If you are asked by your children where they came from, you may tell the story of Izumo and Juno, […]

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Can Y Chromosome Be Even Shorter?

Can Y Chromosome Be Even Shorter?

–Study Says 2 Y Genes Can Replace the Entire Y Chromosome in Assisted Mice Reproduction In human’s long evolution history, the Y chromosome keeps losing approximately 4.6 genes in every 1 million years. However, the shortening Y chromosome seems not to worry about this situation. Today, a group of U.S. […]

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Is DNA from Dad or Mom?

Is DNA from Dad or Mom?

We all know that a healthy person has a pair of genetic sequences and one of the copies is from dad and the other from mom. Previous technology enables scientists to perform testing on the whole genetic sequences, yet it can’t determine whether a particular genetic sequence comes from an […]

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Who Comes First, Male or Female?

Who Comes First, Male or Female?

People used to think that X chromosome appeared many years longer than Y chromosome did. However, American scientists have recently pointed out that the most recent common ancestors of human male came into being at almost same time with the females. Previous studies showed that the most recent common ancestors […]

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