Answer: Genes
Explanation: A segment of DNA that codes for a protein is a gene. A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins
Tall land plants need lots of xylem and phloem, along with more energy. They need to be able to stand upright and have their leaves positioned in the sunlight. Aquatic plants do not need roots.
Strength
strength is needed to become a more dominant species.
Answer:
An allele that is only expressed if two versions of it are present in a cell.
boil
