Answer:
Mutations, the changes in the sequences of genes in DNA, are one source of genetic variation. Another source is gene flow, or the movement of genes between different groups of organisms. Finally, genetic variation can be a result of sexual reproduction, which leads to the creation of new combinations of genes.
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True. Money management does become more important as you learn to pay you're own expenses.
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2 and 4 i think sorry if wrong
Answer:
Option-C (<u>2,3-dimethyloct-2-en-6-yne</u>) is the correct IUPAC name among the given choices.
Explanation:
Option-A i.e. <u>2,3-dimethyloct-(2Z)-en-6-yne</u> is incorrect because it specifies a stereochemistry around double bond. It is not possible to assign the stereochemistry because three of the substituents around double bonds are the same. Hence, it is incorrect to assign stereo terms like Z (cis) or E (trans).
Option-B i.e. <u>6,7-dimethyloct-6-en-2-yne</u> is incorrect because according to rules numbering parent chain always starts from the side having double bond at nearest position. Hence, in this name the triple bond is given first preference which is incorrect.
Option-C i.e. <u>2,3-dimethyloct-2-en-6-yne</u> is correct as it has followed rules by starting numbering from double bond end and there is no stereo term used.
Option-D i.e. <u>6,7-dimethyloct-(6E)-en-2-yne</u> is incorrect because it is violating both numbering rule and stereo rule.
In attached figure. the red names are the correct names for given wrong names (blue) except for option-C.