What is a gene?
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a. a piece of dna that controls a trait
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b. a specific form of an allele
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c. a group of chromosomes
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d. a chromosome that determines gender

Afarmer has applied a pesticide to control a pest population that is affecting her crops. the pest population has reacted as shown below. which best describes the process that the pest population has experienced due to this environmental change? a genetic diversity b natural selection c natural resistance d genetic resistance

What occupation did muhammad have before the first revelation

The influenza virus cause the flu, but not other diseases. why?