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.
![A researcher sequences a DNA fragment using dye-terminator sequencing. In this procedure, each dideoxynucleotide
triphosphate (ddNTP) contains a fluorescent marker specific to the base. Upon excitement by a laser, the ddNTPs emit light at
their characteristic wavelengths. An automated machine then reads the sequence.
In this procedure,
• ddCTP is tagged with a blue marker that emits light at 517 nm,
• ddATP is tagged with a green marker that emits light at 540 nm,
•
ddGTP is tagged with a yellow marker that emits light at 570 nm, and
ddTTP is tagged with a red marker that emits light at 635 nm.
The primer has the sequence 5'-ATGAC-3'. In the image shown here, the shortest fragments are at the bottom and the
longest fragments are at the top.
с
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Write the nucleotide sequence of the newly synthesized DNA, without the primer, in the 3'to 5' direction.
31-
5](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa5d0ed69-4925-4403-a796-f6681910a505%2Fc3a458b0-ae91-4759-8a24-8507f3d882a2%2F8hn34sb_processed.png&w=3840&q=75)
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