The correct answer is Gametogenesis. Gametogenesis is a biological process where diploid cells undergo cell division and formation and maturation of gametes. Down syndrome can be considered to be a disorder where a human has 47 chromosomes instead of having only 46.
Answer:
Microscopically, a single crystal has atoms in a near-perfect periodic arrangement; a polycrystal is composed of many microscopic crystals (called "crystallites" or "grains"), and an amorphous solid (such as glass) has no periodic arrangement even microscopically.
Most inorganic solids are not crystals but polycrystals, i.e. many microscopic crystals fused together into a single solid. ... The third category of solids is amorphous solids, where the atoms have no periodic structure whatsoever. Examples of amorphous solids include glass, wax, and many plastics.
In condensed matter physics and materials science, an amorphous (from the Greek a, without, morphé, shape, form) or non-crystalline solid is a solid that lacks the long-range order that is characteristic of a crystal. In some older books, the term has been used synonymously with glass.
Explanation:
This chapter highlights mesocrystals as an interesting example of particle‐mediated, non‐classical crystallization processes. Mesocrystals — the shortened name for mesoscopically structured crystals — are superstructures composed of nanoparticles, being arranged three‐dimensionally in crystallographic register. Mesocrystals are often only intermediate structures in a non‐classical crystallization pathway leading to a final single crystal by nanoparticle fusion. Therefore, they are difficult to detect. Although mesocrystals were initially described for synthetic systems, recent investigations have revealed an increasing number of bio‐mineral systems which appear to be mesocrystals, but which so far have been considered to be single crystalline, including nacre and sea urchin spines. This chapter briefly defines non‐classical crystallization processes, provides some examples of synthetic mesocrystals and mesocrystals in biomineralization, and attempts to provide some insight into their formation mechanisms, despite their being as yet largely unexplored.
The DNA of cats and dogs is more similar to the DNA of cats and hamsters because of the difference in their order.
According to taxonomic hierarchical classification, organisms are classified into seven different levels: Kingdom - Phylum - Class - Order - Family - Genus - Species. The more common level of classification, the more chances of similarities in the DNA patterns.
Three of the above animals have evolved from a single class,i.e., Mammalia. This means that all of them are mammals. But as evolution took place further, they got divided into two different orders. Cats and dogs went with the order of Carnivora while hamsters went with the order of Rodentia.
The cats and dogs belong to the same order while the hamster belongs to a different order. This means that the cats and dogs, thus, share a more common ancestor. They are more likely to possess more similar patterns of DNA than the hamster. It is because of this difference that the two categories possess a large difference in their DNA.
To know more about the DNA patterns of cats and dogs, refer to the following link:
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