What statement about genetics material is correct
A. Genes encode deoxyribonucleic acid
B. Chromatids contain chromosomes
C. Centromeres connect two chromosomes
D. chromosomes are made up of Genes
D. Chromosomes are made up of genes
This statement is correct. Chromosomes are thread-like structures located within the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA), which is passed from parents to offspring. DNA contains the specific instructions that make each type of living creature unique. The term "genes" refers to the segments of DNA that are the fundamental units of heredity. Genes are the instructions for the synthesis of proteins, which in turn play a critical role in the structure and function of cells and the organism as a whole.
The other statements are incorrect for the following reasons:
A. Genes encode deoxyribonucleic acid: This statement is incorrect because genes are composed of DNA, not the other way around. Genes carry the instructions for making proteins.
B. Chromatids contain chromosomes: This statement is reversed. Chromosomes consist of two identical halves called sister chromatids, which are joined at the centromere. Each chromatid is one copy of a duplicated chromosome.
C. Centromeres connect two chromosomes: This statement is incorrect. Centromeres are not structures that connect two different chromosomes. Instead, a centromere is the region on a chromosome that joins two sister chromatids together. During cell division, the centromere is the point where spindle fibers attach to the chromosome to separate the chromatids into two new cells.