For each chromosome contributed by the sperm there is a corresponding chromosome contributed by the egg, there are two chromosomes of each kind, which together constitute a pair.
The egg of every species of animal or plant carries a definite number of bodies called chromosomes. The sperm carries the same number. Consequently, when the sperm unites with the egg, the fertilized egg will contain the double number of chromosomes.
What do cells do when they see a broken piece of DNA? Cells don't like such breaks. They'll do pretty much anything they can to fix things up. If a chromosome is broken, the cells will repair the break using an intact chromosome.
For it is not cell nuclei, not even individual chromosomes, but certain parts of certain chromosomes from certain cells that must be isolated and collected in enormous quantities for analysis; that would be the precondition for placing the chemist in...
Acknowledging that my biological imperative may not include the drive to procreate, that I just might be attracted to XX chromosomes instead of XY? That's so stupid-minor in comparison to the fact that I might actually be in love for the first time i...
The Y Chromosome, organized religion and money are the roots of all evil.
Closely related species of birds are also chromosomally similar.
Love isn’t a choice. You fall for the person, not their chromosomes.
The test for whether or not you can hold a job should not be the arrangement of your chromosomes.
Cartoons are like fruit flies. Biologists use fruit flies because their large chromosomes and short life cycle make them ideal for studying hereditary changes.
In mathematics and science, there is no difference in the intelligence of men and women. The difference in genes between men and women is simply the Y chromosome, which has nothing to do with intelligence.
Except for the rare cases of plastid inheritance, the inheritance of all known cofactors can be sufficiently accounted for by the presence of genes in the chromosomes. In a word the cytoplasm may be ignored genetically.
My first ideas of human in vitro fertilization (IVF) arose with my Ph.D. in Edinburgh University in the early 1950s. Supervised by Alan Beatty, my research was based on his work on altering chromosomal complements in mouse embryos.
They also knew that there was a string of DNA at the end of each chromosome called a telomere, which shortened a tiny bit each time a cell divided, like time ticking off a clock. As normal cells go through life, their telomeres shorten with each divi...
Family isnt about blood relationships, its about the meaning behind them. I relize now that sharing chromosoms is not the only way to having a family, its about the friendship behind it.
Although each egg cell produced by a woman carries a single X chromosome, the sperm cells produced by a man carry either an X or a Y. This means, in very simple terms, that the sperm cell determines a baby's sex.
My grandfather had two boys, my uncle had three boys, my dad had me and my two brothers, each of my brothers have had two boys. Then something happened with the chromosomal experiment and suddenly I've got three girls.
Something is definitely wrong with my feelings about marriage and procreation. I worry that not only am I missing the chromosome that allows me to dance respectably, but that I am also lacking a conventional vagina.
I may finally call attention to the probability that the association of paternal and maternal chromosomes in pairs and their subsequent separation during the reducing division as indicated above may constitute the physical basis of the Mendelian law ...
I tried all kinds of approaches: sexy, friendly, intimidating—nothing worked. I’m starting to think there’s an invisible force field that prevents honest communication between X and Y chromosomes.
Men like to provide for women and their families. It's in their DNA. I'm obviously no scientist, but I bet if you could hear a Y-chromosome talk, it would say, 'I want to provide and hunt.' When the woman is the primary breadwinner, it's going agains...
