Which of these statements about DNA is true?
(1 point)
A) Proteins signal the cells to make DNA.
B) DNA is too similar to use for grouping organisms.
C)All animals have DNA.
D) DNA is a protein.
To determine which statement about DNA is true, let's analyze each option:
A) Proteins signal the cells to make DNA.
This statement is incorrect. Proteins are not responsible for signaling cells to make DNA. The synthesis of DNA is controlled by specific enzymes, such as DNA polymerase, which catalyze the assembly of DNA molecules.
B) DNA is too similar to use for grouping organisms.
This statement is also incorrect. In fact, DNA is widely used for grouping organisms due to its highly variable and inheritable nature. DNA sequence comparisons can help determine relationships between species and assess evolutionary connections.
C) All animals have DNA.
This statement is true. DNA (deoxyribonucleic acid) is the genetic material found in almost all living organisms, including animals. It carries genetic information and is essential for the development and functioning of living organisms.
D) DNA is a protein.
This statement is incorrect. DNA is not a protein but a nucleic acid. It is composed of two long strands of nucleotides and forms a double helix structure. Proteins, on the other hand, are composed of amino acids and perform various functions in the cell.
Therefore, the correct statement about DNA is: C) All animals have DNA.