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: 18007

#SCPH28 | Zoology

The following geological eras mark the advent of important events in the history of earth- origin of first vertebrates armored fishes, origin of First reptiles, origin of first dinosaurs;

a) Triassic b) Pennsylvanian

c) Ordovician d) Cambrian

Identify the correct match of the events with the geological era;

TLS Online TPP Program

#Question id: 4742

#SCPH06 I Botany

In birds, sex is determined by a ZW chromosome scheme. Males are ZZ and females are ZW. A recessive lethal allele that causes death of the embryo is sometimes present on the Z chromosome in pigeons. What would be the sex ratio in the offspring of a cross between a male that is heterozygous for the lethal allele and a normal female?

TLS Online TPP Program

#Question id: 9229

#SCPH06 I Botany

Which of the following is a generally accurate statement about the current research regarding forest fragmentation?

TLS Online TPP Program

#Question id: 10885

#SCPH06 I Botany

In a field experiment, autotrophs are provided a 14C-labelled carbon compound for photosynthesis. Radioactivity (14C) levels were then monitored at regular intervals in all the trophic levels. In which ecosystem is the radioactivity likely to be detected in longer time at the higher trophic level?

TLS Online TPP Program

#Question id: 2619

#SCPH28 | Zoology

CAP and the Lac repressor; Which one is incorrect about this.