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Biology/meiosis

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Expert: - 12/13/2008


Question
1. explain how does meiosis lead to variation
2.explain how mutations lead to evolutinary change


Answer
During meiosis the paired genes separate.  Assume an egg carrying a gene for blue eyes and a gene for brown.  If a sperm carrying a gene for blue the blue will be expressed.  If a brown gene the eyes would be brown

A mutation means a change has occurred in the DNA.  A change in the DNA is passed on to the next generation.  If this change results in a competitive advantage for an organism the organism has evolved.  Evolution means change

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Walter Hintz

Expertise

Science teacher for over 50 years. MSc. in biology. I can answer questions in general biology, zoology, botany, anatomy and physiology and biochemistry.

Experience

I have a MSc in biology and have been a science teacher for over 50 years. At present I am a faculty member at a college and a science consultant at seven catholic schools.

Publications
The Ohio journal of Science
Momentum-The Journal of the Catholic Education Association

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