m.Which intron interrupts a codon? n. Which intron is located between codons? o. Where would you be likely to find the site specifying poly-A addition?
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.
. The human gene for ß2 lens crystallin has the components listed below. The numbers represent nucleotide
pairs that make up the particular component. Assume
for simplicity that no alternative splicing is involved.
5′ UTR 174
1st exon 119
1st intron 532
2nd exon 337
2nd intron 1431
3rd exon 208
3rd intron 380
4th exon 444
4th intron 99
5th exon 546
3′ UTR 715
Answer the following questions about the ß2 lens
crystallin gene, primary transcript, and gene product.
Questions asking where should be answered with one
of the 11 components from the list or with None.
Assume poly-A tails contain 150 As.
m.Which intron interrupts a codon?
n. Which intron is located between codons?
o. Where would you be likely to find the site specifying
poly-A addition?
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