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How many types of distinct ribosomal RNAs are present in eukaryotic ribosomes?
Consider the following statements and choose the correct answer:
1. In the phenomenon of linkage and crossing over, the genes are arranged in a linear order in a chromosome
2. The linkage groups in an organism are equivalent to the number of chromosome pairs
3. The chances of crossing over are more between two closely placed genes as compared to the genes placed in far proximity
4. The position of genes is very definite in the chromatid
Consider the following statements regarding the theory of linkage and choose the correct answer:
1. Genes are arranged in a linear fashion in the chromosomes
2. Genes that show linkage are situated in the chromosome
3. Linked genes remain in their original combination during the course of inheritance
4. The genes which are widely separated show strong linkage, while those closely located, have more chances to get separated by crossing over
The probabilistic model was used to identify small nucleolar (sno) RNAs in the yeast genome that methylate ribosomal RNA.
Determine the correctness or otherwise of the following Assertion (A) and the Reason (R).
Assertion: Ab initio gene finding algorithms that predict protein coding genes in eukaryotic genomes are not completely accurate.
Reason: Eukaryotic splice sites are difficult to predict.
How many techniques are there for carrying out the screening of sequences encoding for RNAs?
TEL is the ______ sequence derived from the ends of ribosomal RNA-encoding molecules from the macromolecules of the protozoan Tetrahyena.
The command which transcribes the standard input to the standard output and also makes a copy of the same in a file is
Eukaryotic ribosomal subunits are _____________
The following sentences form a paragraph. These four parts are numbered as P, Q, R and S. They are not given in their proper order. Read the sentences and choose the alternative that arranges them in correct order. P. The hypothesis was proposed as an explanation for the increased prevalence of type-2 diabetes in certain populations by American geneticist James V. Neel. Q. Thrifty genes refers to a scientific hypothesis which states that obesity in some human beings can be explained by the existence of a ‘thrifty gene’ that aided the storage of excess energy as fat. R. The same genes, however, turned into a biological liability that led to obesity in some people. S. According to the hypothesis, certain genes, by helping in the storage of energy as fat, might have enabled human ancestors live through periods of famine, thus enhancing their chances of survival.