True
All somatic cells have same genes but the genes whose product is not needed are turned off. Some genes are expressed constitutively and some genes are turned off and on depending upon the requirement of proteins.
A single mutation can have a large effect, but in many cases, evolutionary change is based on the accumulation of many mutations. Gene flow is any movement of genes from onepopulation to another and is an important source of genetic variation.
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Answer:
To determine that electric beams in cathode ray tubes were actually made of particles
Explanation:
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