How does genetic variation and environmental pressures lead to a change in characteristics of a population?

The genetic code is essentially the same for all organisms. based on this information, one can logically assume which of the following statements to be correct? a. dna was the first genetic material. b. the same codons in different organisms translate into the different amino acids. c. different organisms have different numbers of different types of amino acids. d. a gene from an organism can theoretically be expressed by any other organism. e. all organisms have experienced convergent evolution.

Do anyone know who mrs leddy is from duval charter if so me on the homework for 40 points

If this person had son,what,sex chromosome did they give their son? a.x b.y c.neither d.we need more information to know for sure