Which mutation causes either the inclusion of an extra chromosome in offspring or the deletion of an entire chromosome?
a) deletion
b) insertion
c) crossing-over
d) non-disjunction

A) deletion

Explanation:

Deletion is the loss of one of a chromosome or even an entire chromosome. The loss of nucleotide sequences by the genome of an organism implies failures in the pairing of chromosomes in meiosis, which can lead to syndromes such as cry du chat (cat's cry), characterized by neurological dysfunctions and changes in facial structure.

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

explanation:

the water is warmed up by the sun and then it evaporates into the atmosphere. the sunlight warms the water by its heat. water is then cooled down and condensation takes place. the water then finally returns back to the earth by the process of precipitation in the form of rain or ice.

explanation: