DNA and RNA are made up of monomers called nucleotides. - DNA and RNA both have 3 nitrogenous bases: Adenine, Cytosine and Guanine. - DNA and RNA both have a phosphate groups in their nucleotides. Sometimes called phosphoric acid
Answer:
d. Metabolism refers to all of the chemical reactions in a cell that impact energy use and release.
Explanation:
The phrase "all of the chemical reactions" has made it the best definition of metabolism.
Homeotic genes are master regulator genes that direct the development of particular body segments or structures. ... Most animal homeotic genes encode transcription factor proteins that contain a region called the homeodomain and are called Hox genes.
Beak of birds change according to their climate and other conditions in their surroundings as the birds adapt to them.
Explanation:
The beak of the bird is the source from which it catches its prey so it is important for the survival of the bird that the beak remains effective for the use.
The competition from other species of birds may often trigger development in beaks for better suitability to the climate to become more effective than other species.
This happens through the process of adaptation as the birds adapt to their environment and then pass their genes down to their next generation through their inheritance in lineage.
