Episode #122
News Items
Correction About Male and Female Evolution
- re: Science or Fiction? segment – while male mammals have an XY chromosome and so present changes in phenotype easily, don’t male birds actually carry two sex chromosomes of the same type (ZZ) while females carry different ones (ZW)? Wouldn’t this mean that the mechanism for phenotype is different between birds and mammals? Thanks!Meme Gene Seattlereference:biology.about.com/library/weekly/aa091103a.htm
Science or Fiction
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Item #1
Fiction
A new discovery indicates that human consumption of chocolate is at least 150 thousand years old.
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Item #2
Science
Using a computer analysis of the human genome and evolutionary principles, researchers have discovered 300 new human genes.
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Item #3
Science
Physicists have developed a method for manipulating light that is one million times more efficient than existing methods.