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Chapter No.14 Biology 1st important book lines for mdcat and pdf type mcqs.

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UHS past paper 2012 discussion of remaining mcqs form 194 to 220.
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UHS past paper 2012 mcqs 194 to 220, PDF link available in description box In this video the remaining mcqs from UHS past paper 2012 have been discussed in detail in case of any confusion you ask in c...

Chapter 12 and 13..
Important points for MCQS at MDCAT and PPSC level..

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UHS past paper 2012 mcqs 164 to 194 with their description..
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UHS past paper 2012 MCQS discussion 164 to 194 In this video the mcqs from UHS past paper 2012 have been briefly described with their reasoning. I hope that this series wi...

chapter 11 Bioenergetics Biology part 1 for and exams.
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past paper 2012 first 30 mcqs with their discussion.
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UHS mdcat 2012 discussion first 30 mcqs. , , After the discussion of UHS past paper 2011 in detail now we will discus UHS past paper 2012 and in this vid...

HOW TO CHOOSE YOUR BABY'S S*X

Male s***m cells are either X or Y. Female egg cell is always X.

If X-Sperm cell meets the egg (X), baby will be Girl (XX). If Y-Sperm cell meets the egg (X), the baby will be Boy (XY). You can select the s*x of your baby.

X-Sperm cells move slowly but survive longer (up to 3-4days).

Y-Sperm cells move faster but also die faster (lifespan about 24 hrs).

So if you have s*x some days before ovulation, most of the Y-Sperm cells would have died, leaving mostly X-Sperm cells to fertilize the egg.

Here's a simple way to calculate your ovulation period;

1. From the first day you see the blood of your period, pick up a calendar & count 15 DAYS forward (including the first day of the bloodstain).

2. Mark the 15th day with a pen.

3. Mark 3 days before the 15th day.

4. Mark 3 days after the 15th day.

You will see you have 7 days marked in all, which are your ovulation period, FERTILE DAYS or "unsafe period".

'Unsafe' coz if you have s*x on any of these days, you have 98% chances of getting pregnant.

5. Do this every month diligently.

For Example;

If your period was 11th August, 15 days after the first day of the blood stain will be on 25 (i.e. 2 wks)

3 days before the 15th day would be 22, 23 & 24.

3 days after 25th August would be 26, 27 & 28.

So, 22 to 28 August (7days) is when you're ovulating.

Let me repeat; this period when you're ovulating is your fertile period. Any s*xual contact during this period can form a pregnancy.

Don't forget, the 4 days mentioned earlier should remind you that s***m stays in the female body for about 4 days.

To summarize:

If you want a BABY GIRL, have
s*x between 3 days before your ovulation (i.e. 22 to 24th from our example).

Female s***ms (X) swim slowly but can stay inside a woman's body for days without dying off.

If you want a BABY BOY, have s*x on the main ovulation day & 3 days after ovulation (i.e. 26 to 28th from our example).

Male s***ms (Y) swim very fast but will get weak & die off if it finds no egg to fertilize, leaving female X to finish the job.

Remember, ovulation means your egg is ready to be fertilized. Here are major signs that your ovulation has started.

1. Headache
2. High body temperature
3. Dizziness
4. Feeling tired & sleepy
5. Breast tenderness
6. Breast fullness

Here's a simple, natural way to select the s*x of your baby. It might not be 100% exact always. But studies have shown it works.

Written by: Dr. Peter Atangwho, MB.BS, MS.c

UHS MDCAT past paper 2011 Solved form..
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Excretion In Cockroach Biology 2nd year In this video i have tried to explain the mechanism of excretion in cockroach and the role of malpighian tubules in class insecta and how their excretory sys...

That's not fair actually 😀