Hayley Tarnasky, March 18, 2009, Blog #2, 3/3

What Did We Do Today??: (Bio Or Not Bio: That Is The Question)

• Went over Biology 30 Diploma Exam Exemplars
• HOTFF Chart 
• Questions on Page 529 4,5,7,8
• Case Study on Page 527 on Hormone Levels During Menstrual Cycle
• Fertilization, Pregnancy, and Birth (Beginning on Page 530)
• Did worksheet on Fertilization, Pregnancy, and Birth

From The Students Perspective (Thoughts and Opinions)

• I thought it was pretty crazy that a women can go through so many stages, and then a baby results from it, like the fact that all the mitotic division and all that result in an embryo and then a fetus is absolutely baffling how bones, and eyes and ears and our brains develop from such a tiny union of sperm and egg. It's truly amazing the things a human body can do and producing a baby makes the human body even more of a spectacular thing to look at it. So, in turn, by all this stuff being so awesome and actually relevant it makes Biology 30 an interesting class. 
• We were talking about twins being when an egg is split into two or when two eggs are implanted into the uterine wall. I wonder which is more common: fraternal or maternal?

Somewhere, Out There, Beneath The Pale Moon Light(Above And Beyond)

• According to http://organizedwisdom.com/Fraternal_Twins_vs._Identical_Twins fraternal twins are more common than identical twins and account for about 2/3 of twins pregnancies. Also twins are slightly more likely to be female than male.
• The following picture is an image of identical(left) and fraternal(right)
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