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Self Assessment Answer # 5
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© 2002 - 2005
The new child will not be identical to the twins. This new child would have developed from a new zygote and that zygote would have been made by the fusion of a new sperm and a new egg. The chance that both those gametes are identical to the ones that created the zygote-twins is (effectively) impossible! The crossing over in prophase I and the random segregation at anaphase I that occurred in the parents - in order to make the haploid cells for gametes - produce millions (perhaps billions) of different possibilities. This is why brother or sisters in a family are not identical unless they are identical twins.
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© 2002 - 2005
Dr Jamie Love, the producer of these Genetics lessons, has written several self-study science courses specifically designed for home schoolers and other distance learners. These courses are "hypertextbooks" - delivered over the internet and read on your computer, just like web pages.
To organize and distribute these hypertextbooks, Jamie created Merlin's Science Academy - a (non-accredited) "virtual school". Merlin's Science Academy sells self-paced, self-learning hypertextbooks that teach Alchemy (actually, Chemistry ),
Astronomy and
Genetics in a fun and unique way.
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