a d 5. (four marks) In eukaryotes, replication starts more or less simultaneously at multiple points of origin along a chromosome. What pattern of radioactivity would be found after briefly exposing to radioactive adenine a cell that is just beginning to replicate, and then quickly replacing the radioactive with nonradioactive adenine? a. many short sections of radioactive DNA b. one radioactive section of DNA starting at one particular end of the chromosomes c. many short radioactive strands of DNA in the leading strands only d. many short radioactive sections of DNA in the lagging strands only e. no radioactive sections in the DNA 6 (two marks) Cytokinesis is

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A:

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Gene Interactions

When the expression of a single trait is influenced by two or more different non-allelic genes, it is termed as genetic interaction. According to Mendel's law of inheritance, each gene functions in its own way and does not depend on the function of another gene, i.e., a single gene controls each of seven characteristics considered, but the complex contribution of many different genes determine many traits of an organism.

Gene Expression

Gene expression is a process by which the instructions present in deoxyribonucleic acid (DNA) are converted into useful molecules such as proteins, and functional messenger ribonucleic (mRNA) molecules in the case of non-protein-coding genes.