Which of the following would MOST likely result in an abnormal chromosome number? Failure of homologous chromosomes to separate during meiosis.
The deletion of DNA during translation.
Mutations occurring during the blastula stage.
DNA exposed to radiation after the birth of the organism.

genetic defect on the chromosome graph

Explanation:

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Failure of homologous chromosomes to separate during meiosis.

as many times as you want

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.