The right answer is dihybrid crosses.
<span>A dihybrid crossing is a reproduction between two organisms that differ in two traits. Individuals of this type of cross are homozygous for a specific trait.
The traits are characteristics that are determined by DNA segments called genes.
Diploid organisms inherit two alleles for each gene.
An allele is an alternative version of an inherited gene (one of each parent) during sexual reproduction.</span>
Answer:
The third line of defence against pathogenic invasion is the adaptive immune response, which has two key qualities: It is specific (it can differentiate between specific microorganisms and respond accordingly) It is adaptive (it can produce a heightened response upon re-exposure - in other words, it has memory)
Explanation:
Breeding or more precisely artificial breeding is done in both plants and animals. Plants and animals with superior qualities are chosen and allowed to interbreed to produce superior quality breed. The major benefit is to meet the demands of increasing population i.e., with the help of selective breeding techniques we can increase the yield of milk from cows or the agricultural yield can be enhanced. We can introduce pest and insect resistance traits in plants. Superior breed of chickens can be made which produce large size eggs.
Anton van Leeuwenhoek :-))
I think it should be d because you can't measure gas and its mass but you do you man
