Two-Part Question: Which of the following isotopes is best suited to determining the age of a Coelophysis fossil AND does any isotope follow
the relationship described in the graph above (yes -or- no)?
(A) carbon-14 (yes)
(B) potassium-40 (yes)
(C) carbon-14 (no)
(D) potassium-40 (no)

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

Select the correct answer. tay-sachs disease is caused by a mutation in the hexa gene located on chromosome 15. tay-sachs follows an autosomal recessive pattern of inheritance. with the of the diagram, identify which of the offspring will be an unaffected carrier. a diagram showing the genes of parents who are carriers of tay-sachs disease a. a, b, and c b. b and c c. a and d d. a e. d

If the rna molecule in a human has the nucleotide sequence of guu, this would the amino acid valine would be needed to make the protein. how would this cha process was occurring in a mushroom?