In a sequence database of a given size, which of the following expressions is likely to retrieve more matches (X means any amino acid; any of the residues in square brackets can occupy that position)?

TLS Online TPP Program

#Question id: 16130

#SCPH06 I Botany

You are studying regulation of the yeast enzyme glutamine synthetase (GS), which is encoded by the GLN1 gene. You have isolated two mutants, designated gln2– and gln3–, that give decreased GS activity. Mating of either gln2– or gln3– haploids to wild type produces heterozygous diploids that show normal amounts of GS expression. When you cross either a gln2– or gln3– haploid to a gln1– strain the resulting diploids show normal expression of GS.              

How many units of ß-galactiosidase would you expect to be expressed from deletion 1 in a gln2– mutant? 

TLS Online TPP Program

#Question id: 8684

#SCPH28 | Zoology

Use the following information to answer the question.

Which of the following trees, if any, depicts the same relationship among species as shown above?

TLS Online TPP Program

#Question id: 9215

#SCPH06 I Botany

Use the following figure to answer the question

Five new individuals were added to a small population of bighorn sheep in 1986, and ten more were added between 1990 and 1994. According to the figure, what occurred in this population after these additions?

TLS Online TPP Program

#Question id: 492

#SCPH05 I Biotechnology

In humans, gluconeogenesis:

TLS Online TPP Program

#Question id: 2646

#SCPH01 Biochemistry

How many stem loop structures play important role in complete system of tryptophan gene regulation?