The right answer is A.
Insecticides are active substances or phytosanitary preparations with the property of killing insects, their larvae and / or their eggs. They are part of the family of pesticides, themselves included in the family of biocides, both of which are regulated in Europe by specific directives.
Some pestiids such as organoclorides are broad-spectrum, ie they act on several insects at the same time (whether they are good or bad).
Answer:
Law of segregation
Explanation:
Mendel's law of segregation states that alleles of a gene get separated into gametes during meiosis. He discovered this law when he crossed a homozygous tall plant with a homozygous short plant. He noticed that all the F1 offsprings were tall. He then self-crossed the F1 offsprings to produce a phenotypic ratio of 3:1 in the F2 generation.
In this test cross, a dominant plant with green pod was crossed with a homozygous recessive plant with yellow pods. This cross was conducted to determine the genotype of the dominant parent. The result showed that the parent is heterozygous (Gg) because a 1:1 phenotypic ratio was obtained i.e. 1 Green pod plant: 1 yellow pod Plant.
This illustrates what Mendel discovered in his law of segregation that each allele will get separated into the gametes. In this case of Gg plant, G and g alleles will get separated into gametes. Although the g allele was masked but it will get separated into gametes, which will fuse with another recessive gamete from the homozygous recessive parent (gg) to produce a homozygous recessive offspring.
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