1. Which line represents the RNA? a) orange line b) blue line 2. In which tissue
ID: 33872 • Letter: 1
Question
1. Which line represents the RNA?
a) orange line
b) blue line
2. In which tissue does this gene produce the longer mRNA?
a) pituitary
b) adrenal
3. Considering your conclusions from the last time you analyzed these mRNAs, what can you deduce about the protein product of this gene in pituitary vs. adrenal tissue?
Please Include Explanation!!
This gene's polypeptide product is longer in pituitary than it is in adrenal tissue. This gene's polypeptide product is longer in adrenal than it is in pituitary tissue. This gene's polypeptide product in pituitary tissue is the same size as it's polypeptide product in adrenal tissue. This analysis is not sufficient to deduce anything about the gene'spolypeptide products in these two tissues.Explanation / Answer
1. b) Blue line
Blue line is mRNA whereas orange line is DNA. The loops in the DNA represent introns. Since the regions of introns are spliced away in the mature mRNA, corresponding complementary regions are not found in the mRNA and hence, the DNA loops out.
2. a) Pituitary
The mRNA from pituitary includes 6 exons whereas the mRNA from adrenal gland includes only 5 introns. Intron 3 is missing in the adrenal mRNA.
3. This gene’s polypeptide product is longer in pituitary than it is in adrenal tissue.
Since the mRNA given is mature mRNA, which is produced after splicing, it can be said that the polypeptide from pituitary is longer than that of the adrenal gland. The polypeptide from pituitary is coded from all the 6 exons. The polypeptide from adrenal is coded by 5 exons only.
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