Inherited traits are passed down from our parents to us, their offspring, by the information that is coded in our parents’ _.
A. RNA B. antibodies C. chromosomes D. plasma
The Correct Answer and Explanation is:
The correct answer is C. chromosomes.
Inherited traits are transmitted from parents to offspring through genetic material contained in chromosomes. Chromosomes are thread-like structures located within the nucleus of cells. They are composed of DNA (deoxyribonucleic acid), which carries the genetic instructions for growth, development, functioning, and reproduction of all living organisms. DNA contains sequences of genes, which are specific segments that code for various traits, like eye color, hair type, and other characteristics that can be passed down from one generation to the next.
Each human cell typically contains 23 pairs of chromosomes, for a total of 46. Of these, 22 pairs are autosomes, and the last pair are sex chromosomes, which determine an individual’s biological sex (XX for females and XY for males). We inherit one chromosome from each pair from each parent, giving us a combination of traits from both parents. This combination of genetic material results in unique genetic coding, making every person different, except in the case of identical twins who share the exact same genetic makeup.
Other options in the question, such as RNA, antibodies, and plasma, do not play a direct role in the inheritance of traits. RNA (ribonucleic acid) helps in the synthesis of proteins and plays a role in gene expression but does not carry hereditary information between generations. Antibodies are proteins produced by the immune system to fight infections; they are not involved in genetic inheritance. Plasma is the liquid component of blood that transports cells and proteins but does not contain hereditary information.
Thus, chromosomes are the primary carriers of genetic information. They ensure that genetic instructions are passed from parents to their offspring, maintaining the continuity of biological traits across generations.