The full moon in April 1970 occurred on April 21st.
January 21st is nine months later.
So the Y chromosome sperm travels faster but doesn't last as long - meaning it has to fertilize an egg that has already dropped and is ready to receive..
Sperm, however, can either have an X or a Y chromosome. Therefore, if a sperm with an X chromosome fertilises an egg, the resulting zygote will be female (XX). On the other hand, if the sperm which fertilises the egg has a Y chromosome, the zygote will be male (XY). In short, genetically, the probability of having a boy or a girl depends on whether the sperm that fertilises the egg is X or Y.
This is because sperm cells with an X and Y copy have some different characteristics:
- Y sperm: are faster but survive for less time in the female genital tract.
- X sperm: are slower, but they are more resistant and therefore survive longer.
Yes, an egg must be released from an ovary, a process called ovulation, to be fertilized. Once released, the egg travels through the fallopian tube, where it can be fertilized by sperm.
So that means it mostly likely happened during the Full Moon and so either the 21st or a day or two after or before.
first Earth Day was celebrated on April 22, 1970
Even though 10% of the U.S. population participated in Earth Day - my parents were too busy making me!!
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