I am so excited to take part in this, my second, A – Z Challenge! Last year I did the challenge using “recipes” as my inspiration. Well, this year I’m going to draw on my nursing background and use “parts of the human body” as my inspiration! Hmmm…a part of the body that starts with “Q”, “X” or “Z”….
It should be a lot of fun and I’m looking forward to seeing how everyone interprets the Challenge!
So, without further ado, “Y” is for Y-chromosome:
The Y chromosome is what makes guys, well, guys.
Among chromosomes, the Y is a bit of a celebrity, something a little different. Among scientists, the Y is infamous for containing some of the most complex regions to sequence in the human genome.
- Chromosomes are long pieces of DNA found in the nucleus of cells. DNA is the material that holds genes and is considered the building block of the human body.
- Chromosomes come in pairs. Normally, each cell in the human body has 23 pairs of chromosomes (46 total chromosomes). Half come from the mother; the other half come from the father.
- Two of the chromosomes (the X and the Y chromosome) determine if your gender. They are called sex chromosomes
- Females have 2 X chromosomes. Males have 1 X and 1 Y chromosome.
- The mother always contributes an X chromosome to the child. The father may contribute an X or a Y. Therefore, it is the chromosome from the father that determines the gender of the child.
- the Y chromosome contains a gene, SRY, which is responsible for the development of a fetus into a male. Other genes on the Y chromosome are important for male fertility.
Y is also for:
yellow marrow Specialized lipid storage tissue within bone cavities.