A quick presentation about the SRY gene and how it is involved in the sex determination. Further, this presentation shows the factors that may affect the SRY gene and how we could test for these factors. Please sit back and enjoy the presentation!
1. Males and females differ in physical
activity
http://www.nrcresearchpress.com/doi/pdf/10.1139/h04-010
2. Gender Examination
Human rights humiliation until 1969 when sex chromosome diagnosis was established
http://www.cliparthut.com/clip-arts/1614/black-and-white-cartoon-doctor-1614764.jpg
5. Crossing over and SRY abnormalities
https://amasianv.files.wordpress.com/2012/08/xx-male1.jpg
PAR
PAR
PAR
PAR
6. Examples of abnormal cases of SRY
Infertile Infertile
http://iws.inha.ac.kr/~biology/lab9/genetics/figure/gene6.jpg
7. Examples of abnormal cases of SRY
http://www.lasprovincias.es/las_provincias/noticias/201508/07/media/87282977.jpg
Maria Patino
1983 – Received “certificate of femininity”
1985 – found to be “XY” and infertile female
8. What are the causes for these abnormalities
DNA crossover
abnormality
Mobile phone
signals
Nutrition level
Activity level
Hypothesis:
Environmental factors
we interact with mostly
14. 3-Nutrition level
It has been documented that the deficiency of such nutrients (Folate, Iron, Zinc,
Niacin, Vitamin C, and Selenium) may result in the disruption of genomic integrity
and alteration of DNA. Thus, nutrients act as catalytic to stabilize DNA structure.
http://www.spectracell.com/media/uploaded/4/0e2008887_444fullpaper2002jnutrgenenutrien
tinteractionsanddnamethylation.pdf
15. 3-Nutrition level
Lack of iron will reduce the DNA methylation and thus increases the DNA instability
which will lead to DNA breakage and lack of protection
http://www.researchgate.net/publication/275368066/figure/fig1/Figure-35-Scheme27.-Iron-
catalyzed-methylation-of--unsaturated-acids-with-DTBP.AS:267425791909920@1440770685326
16. Why these factors?
Because they all lead to high incidents of DNA breakage which will increase
the probability of breaking the Y chromosome just on the SRY region and that
will lead to missing the SRY from the Y chromosome or transferring it to the X
chromosome.
18. Control groups 4X Experimental groups
SRY normality testing
SRY normality testing
SRY normality testing
SRY normality testing
SRY normality testing
SRY normality testing
SRY normality testing
Grp 1
Grp 2
Grp 3
Grp 4
Grp 5
Grp 6
Grp 7
Grp 1
Grp 2
Grp 3
Grp 4
Grp 5
Grp 6
Grp 7
How to study these factors
Testing methods QF-PCR and FISH analysis
19. success in biology:
it describes individual reproductive success and is equal to the
average contribution to the gene pool of the next generation that is
made by an average individual of the specified genotype or
phenotype.
Why is this study important?
https://en.wikipedia.org/wiki/Fitness_(biology)
20. Since I have just defined success in biology; thus, as caring biologist
team we are going to work very hard to identify the factors from
our daily life that affect the SRY abnormality to generate successful
future generations and protect our human community
Why is this study important?
Editor's Notes
Dosage compensation
Talk about the SRY
Talk about the ABNORMAL BREAKAGE of the DNA
We know how these abnormalities happen but what are the inducers/enhancers for
these events?
DNA is greatly affected by our environment/surroundings
What are the main factors we interact with daily could affect our gametes production?
The high temperature and waves will break the DNA
Evidence that DNA break and lose some portions of it
Low activity level increases the cellular stress
DNA breakage due to oxidative stress
Methylation act as a regulator for the genetic information where the breakage will occur
Because they all lead to DNA breakage where there is a big probability of breaking the Y chromosome after the SRY region and that will lead to missing the SRY or transferring it to the X chromosome
Should I use humans for my study?? I think I will have some ethical issues if I do so. Since mice have SRY same as humans, we will be using mice to test our factors. Not only that, but we are going to study only males since they are the only carriers to the Y chromosome (where the SRY is).
Talk about the grouping of mice and stuff
Biology is the origin of what we are on right now and biology really care about the success.