Answer:
The correct answer will be- this base pairing allows the complementation like lock and key
Explanation:
In DNA, the nitrogenous bases on one strand pairs with the nitrogenous bases on another strand.
Experiments of Erwin Chargaff showed that purine bind pyrimidines where the adenine binds thymine and guanine bind cytosine via double and triple hydrogen bonds respectively.
This hydrogen bonding between the purines and pyrimidines provides structural stability as it is based on the complementation. This complementary base pairing allows the two strands to fit like a key and a lock.
Thus, this base pairing allows the complementation like lock and key is the correct answer.
Answer:
at a transform plate boundary
Explanation:
Transform faults are found where plates slide past one another. An example of a transform-fault plate boundary is the San Andreas fault, along the coast of California and northwestern Mexico. Earthquakes at transform faults tend to occur at shallow depths and form fairly straight linear patterns.
Answer:
C. Carbon dioxide + water + heat
Explanation:
The answer of the question is c. they do it to reduce completion so that they can thrive and no other species can survive. <span />
Answer:
sexual selection
natural selection
Explanation:
Natural selection is an evolutionary mechanism (changes the allele frequency) by favouring traits that are advantageous among others because they increase the survival and reproduction. In the example above, mosquitofish that live in the predator-rich ponds devoloped a trait that help them survive (swimming in short, fast bursts). This adaptation to environment is favourable by natural selection.
Sexual selection refers to the female mosquitofish and the fact that they choose their males (with better reproductive success).