If the caudal portion of the neural tube failed to develop properly the

The choices can be found elsewhere and as follows:

A) hindbrain would not be present.
B) spinal cord may be affected.
C) cranial nerves would not form.

I believe the correct answer is option B. If the caudal portion of the neural tube failed to develop properly the spinal cord may be affected.

1. true.2. true.3. true.4. false.5. true.the concept of darwin's theory of evolution involves the idea that there are limited resources in a given living environment and that the organisms which live within have variations in their genetic make up due to random mating. the ones with beneficial genetic variations can express certain traits which give them an upper hand in surviving and reproducing in the said environment compared to ones who may have a more disadvantageous variation in traits. over time, the organisms with an upper hand will survive and reproduce more frequently and pass on their beneficial genes while the others die. the result is evolution, where we observe (usually, but not always) eventually, phenotypic distinct changes.