Answer: crossing over
during the process of fertilization, a sperm and egg join together to create a zygote. since a sperm had half the number of chromosomes and an egg has half the number of chromosomes, when they join together the zygote had a complete diploid set of chromosomes. the assortment of chromosomes and crossing over promotes genetic variation during the process of reproduction
Missense substitution (i think)
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Answer and Explanation:
Protein folding : It is the physical procedure by which a protein chain gains its local 3-dimensional structure, an adaptation that is normally naturally useful, in a quick and reproducible way. It is the physical procedure by which a polypeptide folds into its trademark and useful three-dimensional structure from curl. Every protein exists as an unfurled polypeptide or arbitrary curl when interpreted from a grouping of mRNA to a direct chain of amino acids. This polypeptide does not have any steady (dependable) three-dimensional structure (the left hand side of the primary figure). Amino acids cooperate with one another to create a well-characterized three-dimensional structure, the collapsed protein (the correct hand side of the figure), known as the local state. The subsequent three-dimensional structure is dictated by the amino corrosive grouping.
\The right three-dimensional structure is fundamental to work, albeit a few pieces of practical proteins may remain unfurled, so protein elements is significant. Inability to crease into local structure commonly creates inert proteins, however in certain occurrences misfolded proteins have changed or lethal usefulness. A few neuro degenerative and different ailments are accepted to result from the collection of amyloid fibrils shaped by misfolded proteins. Numerous sensitivities are brought about by off base collapsing of certain proteins, on the grounds that the invulnerable framework doesn't deliver antibodies for certain protein structures.
Alleles. Alleles are the "same" genes, but provide a variation of the intended function.
The team of Hunt had designed an experiment to test the hypothesis of the effect of BPA on mice. The daily doses of BPA was administered into the female groups of mice for 3, 5 and 7 days and then the genetic abnormalities which occured during meiosis, chromosome division or egg formation were studied.
The steps followed in this experiment in order are as follows:
- Observation- The mice eggs in plastic cages when washed using harsh soap showed problems during the cell division stage which caused genetic abnormalities.
- Question- If the bisphenol A from the plastic affected mice in the damaged cages.
- Hypothesis- If the frequency of the genetic abnormality was affected by the exposure to bisphenol A.
- Prediction- The level of exposure of mice to bisphenol A was proportional to the increase in genetic abnormalities.
