I think the answer is A
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Mendel proposed the law of segregation and the law of independent assortment toexplain the inheritance behind his pea plant traits. A hundred years later, Boveri and Sutton developed the chromosome theory of inheritance, which stated thatchromosomes were responsible for the heredity Mendel observed.
Living things must have a metabolism in order to be considered living.
A protein may consist of as many as 5,000 a.a.ms.