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In what layer of the sun is energy transfers between atoms

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?

The cretaceous period spanned the time interval between and 65 million years ago. 250 million 144 million 75 million 200 million