In mammalian development Prior to blastocyst formation, each embryonic blastomere expresses ________ transcription factors and appears to be capable of becoming either ICM or trophoblast.

TLS Online TPP Program

#Question id: 8912

#Unit 9. Diversity of Life Forms

Both animals and fungi are heterotrophic. What distinguishes animal heterotrophy from fungal heterotrophy is that only animals derive their nutrition

TLS Online TPP Program

#Question id: 8913

#Unit 9. Diversity of Life Forms

The larvae of some insects are merely small versions of the adult, whereas the larvae of other insects look completely different from adults, eat different foods, and may live in different habitats. Which of the following most directly favors the evolution of the latter, more radical, kind of metamorphosis?

TLS Online TPP Program

#Question id: 8914

#Unit 9. Diversity of Life Forms

Which of the following is (are) unique to animals?

TLS Online TPP Program

#Question id: 8915

#Unit 9. Diversity of Life Forms

The number of legs an insect has, the number of vertebrae in a vertebral column, or the number of joints in a digit (such as a finger) are all strongly influenced by

TLS Online TPP Program

#Question id: 8916

#Unit 9. Diversity of Life Forms

What do animals as diverse as corals and monkeys have in common?

TLS Online TPP Program

#Question id: 8917

#Unit 9. Diversity of Life Forms

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