Question

why do heart cells have different characteristics than skin cells? (1 point) heart cells have different dna than skin cells. heart cells reproduce by cell differentiation. heart cells reproduce by mitosis. heart cells express different genes than skin cells.

Explanation:

• All cells in an organism (like heart and skin cells) have the same DNA. So the option "Heart cells have different DNA than skin cells" is incorrect.
• Cell differentiation is a process, not a mode of reproduction. Heart cells reproduce by mitosis (as do most somatic cells), but this doesn't explain the difference in characteristics. The key is gene expression. Different cell types (heart vs skin) express different subsets of genes from the same genome, which leads to their different characteristics.

Answer:

Heart cells express different genes than skin cells.