Explanation:
In the majority of cases, the extra copy of chromosome 21 comes from the mother in the egg.
In a small percentage (less than 5%) of cases, the extra copy of chromosome 21 comes from the father through the sperm.
In the remaining cases, the error occurs after fertilization, as the embryo grows.
The given blank can be filled with implicit memory.
The implicit memory is a type of long term memory. This type of the memory is used and acquired unconsciously. This can affect the thought and the behavior of the person.
In the given case, once a person learns to ride a bicycle, whenever he or she will ride a bicycle will start paddling and balancing the handle and tires, even if it is unknown to the person that he is doing all these things.
Answer:
There are three types of life cycles depend on the dominant phase. These are Haplontic, Haplo-diplontic and Diplontic life cycles. The steps shown in the question is of Diplontic type of reproductive cycle. In this type of cycle, dominant phase is the diploid. The haploid phase is only represented by short lived gametes.
Answer:
Mutation, an alteration in the genetic material (the genome) of a cell of a living organism or of a virus that is more or less permanent and that can be transmitted to the cell’s or the virus’s descendants. The genomes of organisms are all composed of DNA, whereas viral genomes can be of DNA or RNA.
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