The lacheinmal protein is a hypothetical protein that causes people to smile more often. it is inactive in many chronically unhappy people. the mRNA isolated from a number of different unhappy individuals in the same family was found to lack an internal stretch of 173 nucleotides that is present in the lacheinmal mRNA isolated from happy members of the same family. the DNA sequences of the Lacheinmal genes from the happy and unhappy family members were determined and compared. they differed by a single nucleotide substitution, which lay in an intron. What can you say about the molecular basis of unhappiness in this family?

this is what i have said about this image so far, what else can be said aswell including the raw count column. "   Interpreting the results of an RNA-Seq analysis is pivotal in understanding the underlying genetic mechanisms of diseases such as breast cancer. In this analysis, Figure 1 provides comprehensive data on differentially expressed genes associated with breast cancer. By delving into the provided information, we can gain valuable insights into the molecular landscape of this disease. First focus is on the gene with the highest fold change, EYA4, situated on chromosome 6. With a staggering fold change of 3604.4176, EYA4 exhibits an unprecedented level of overexpression in cancerous cells compared to normal cells. This profound alteration suggests a pivotal role for EYA4 in breast cancer pathogenesis. The log2 fold change of 11.81555 further emphasizes the magnitude of this difference in gene expression. Statistical significance is evident, with an exceptionally low p-value of…

In Northern blot analysis, mRNA samples from tissues are bound to a labeled DNA probe that is complementary to the mRNA, and run on a gel to be visualized. The protein tropomyosin is known to be present in both brain and liver.  When brain and liver tissue were assayed for the presence of tropomyosin mature mRNA, bands of two different sizes were seen. Tropomyosin gene diagram (3000 bp total): Shown in attatched image If the band on the Northern blot for mRNA isolated from liver tissue is 2580 bp, whereas from brain tissue the band is 2250 bp, what is most likely? a)The two mRNAs are made from different tropomyosin DNA sequences. b)Exon 2 is alternatively spliced out of the brain mRNA. c)Introns 1 and 2 are spliced out of the brain transcript but not the liver transcript. d)Exons 1 and 3 are spliced out of the brain transcript but not the liver transcript. e)Exon 2 is alternatively spliced out of the liver mRNA.

You have recently cloned multiple cDNAs for a gene you are studying. After sequencing ten of the cDNAs, you find that seven of the cDNAs would produce a protein of 531 amino acids, while the other three cDNAs would produce a protein missing 30 amino acids from the center of the protein. This finding is can be explained by: O nonsense suppression O alternative splicing O basepair wobble O variability in the length of the poly(A) tail