Question

9 explain how macromolecules are involved in passing traits from parents to offspring.

Explanation:

1. DNA (a nucleic acid, macromolecule): Contains the genetic code (genes) with instructions for traits. During reproduction (e.g., meiosis in sexual reproduction), DNA is passed from parents to offspring (sperm/egg carry DNA).
2. RNA (also nucleic acid): Involved in transcribing DNA’s code and translating it into proteins. Messenger RNA (mRNA) carries genetic info from DNA to ribosomes.
3. Proteins: Encode traits (e.g., enzymes, structural proteins). The sequence of amino acids in proteins is determined by DNA’s nucleotide sequence. When DNA is inherited, it dictates protein synthesis in offspring, expressing parental traits. Also, proteins like histones help package DNA, and regulatory proteins control gene expression related to trait inheritance.

Answer:

Macromolecules involved in passing traits:

• Nucleic Acids (DNA/RNA): DNA holds genetic information (genes) for traits. During reproduction, parental DNA is transmitted to offspring (e.g., via gametes). RNA transcribes DNA’s code and translates it into proteins.
• Proteins: Traits are expressed as proteins (e.g., enzymes, structural proteins). DNA’s nucleotide sequence determines protein amino - acid sequences. Inherited DNA directs protein synthesis in offspring, expressing parental traits. Regulatory proteins also control gene expression for trait inheritance.