If organisms A, B, and C belong to the same class but to different orders and if organisms C, D, and E belong to the same order but to different families, which of the following pairs of organisms would be expected to show the greatest degree of structural homology?

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#Question id: 8917

#SCPH28 | Zoology

The Hox genes came to regulate each of the following in what sequence, from earliest to most recent?

1. identity and position of paired appendages in protostome embryos

2. formation of water channels in sponges

3. anterior-posterior orientation of segments in protostome embryos

4. positioning of tentacles in cnidarians

5. anterior-posterior orientation in vertebrate embryos

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#Question id: 8918

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

In individual insects of some species, whole chromosomes that carry larval genes are eliminated from the genomes of somatic cells at the time of metamorphosis. A consequence of this occurrence is that

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#Question id: 8918

#SCPH05 I Biotechnology

In individual insects of some species, whole chromosomes that carry larval genes are eliminated from the genomes of somatic cells at the time of metamorphosis. A consequence of this occurrence is that

TLS Online TPP Program

#Question id: 8918

#SCPH06 I Botany

In individual insects of some species, whole chromosomes that carry larval genes are eliminated from the genomes of somatic cells at the time of metamorphosis. A consequence of this occurrence is that

TLS Online TPP Program

#Question id: 8918

#SCPH28 | Zoology

In individual insects of some species, whole chromosomes that carry larval genes are eliminated from the genomes of somatic cells at the time of metamorphosis. A consequence of this occurrence is that

TLS Online TPP Program

#Question id: 8919

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

The last common ancestor of all animals was probably a