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Why did rutherford say that bombarding atoms with particles was like "playing with marbles" what

Gregor mendel is best known for his work with pea plants and for uncover many of the mysteries of genetics. one of his major findings stated that there were specific, physical units of inheritance that are transmitted during reproduction. what is the the name given to these units of inheritance which can be found on chromosomes? a) centromeres b) cytoplasm c) genes d) nucleotides

Which of the following are responsible for sending messages from the hypothalamus to the thalamus?