All cells within an organism have the same number of chromosomes except

a.) cardiac cells
b.) nerve cells
c.) muscle cells
d.) gametes

When plants use sunlight to make food, the energy of sunlight is

Isotopes of the same element have differ in their

Which of these is not an example of molecular homology? 1. use of dna and rna as genetic material 2.use of glycolysis as the first step in cellular respiration in both plants and animals 3. the lack of an igf-1 gene in prokaryotes 4. the use of aldolase b to break down fructose in bacteria, plants and animals