Answer:
Radiometric dating methods
Explanation:
Geologists usually use radiometric dating methods, based on the natural radioactive decay of certain elements such as potassium and carbon to find the age of fossils.
Because each carbon is identical, they all have four valence electrons, so they can easily bond with other carbon atoms to form long chains or rings
Answer:
Pleiotropy
Explanation:
Marfan syndrome is an example of pleiotropy, which can be defined as the phenomenon in which a pair of allele genes conditions the appearance of several traits in the same organism.
All of these traits occur through the action of only one pair of genes, so pleiotropy shows that the idea that each gene affects only one trait is not always valid.
In other words, a pleiotropic gene can have an effect on several phenotypes at the same time, due to the fact that the mutated gene is used by a group of cells (or targets) that have the same signaling function.
Answer:
The body cell has 26; the sex cell has two.
Explanation:
I think sorry if I'm wrong.
