Of the following anatomical structures, which is homologous to the wing of a bird?

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#Question id: 4563

#SCPH05 I Biotechnology

If ʺxʺ indicates the location of fossils of two closely related species, then fossils of their most-recent common ancestor are most likely to occur in which stratum?

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#Question id: 1266

#SCPH06 I Botany

Integrins

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#Question id: 570

#SCPH28 | Zoology

Which of the following is true for allosteric enzymes

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#Question id: 78

#I Life Science/ Life Sciences Group – I-V

Which is true about naturally occurring monosaccharides?

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#Question id: 16129

#SCPH06 I Botany

5 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.

Describe the cis-acting elements in the GLN1 promoter that are evident from these experiments, giving both their position and as much of their function as you can deduce.