Fossil evidence indicates that the following events occurred in what sequence, from earliest to most recent?

1. Protostomes invade terrestrial environments.

2. Cambrian explosion occurs.

3. Deuterostomes invade terrestrial environments.

4. Vertebrates become top predators in the seas.

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#Question id: 15141

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

An alignment of two protein sequences is given below:

Sequence A         A G A A C D E V I G

Sequence B         A G E Y C D A V I G

The similarity score (%) for the above alignment will be:

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#Question id: 5840

#SCPH06 I Botany

The sequence of proteins used in bacterial recombination is

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#Question id: 14140

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

In sequence alignment by BLAST, each word from query sequence is typically _______ residues for protein sequences and _______ residues for DNA sequences.

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#Question id: 4171

#SCPH06 I Botany

Use the table below to determine which template strand DNA sequence (written in the 5ʹ → 3ʹm direction) specifies the tripeptide with the sequence gly-ala-leu.

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#Question id: 8842

#SCPH28 | Zoology

In terms of the hierarchical organization of life, a bacterium is at the __________ level of organization, whereas a human is at the __________ level of organization