Answer:
High levels of estrogen.
<u><em>Hope this helps :)</em></u>
<u><em>Pls brainliest...</em></u>
<span>The answer is to control the crossing of the traits.
The idea of preventing plants from self-pollinating is to control the crossing of the traits. If plants were self-pollinating, he could not know if the traits are inherited from the same plant or from the other. By preventing this, he could cross parents with known phenotype and that way learn about crossing process and inheriting process.</span>
<span>
probability is what change something has happen.The punnet square is a way how to predict in genetics how likely an offspring is to have a trait passed on from parents,or in others words find out the probability of a trait begin in the phenotype or the phenotype </span>
Avery's experiments showed that bacteria are transformed by “transforming principle” – DNA.
When Griffit in his experiments showed that R-strain bacteria (non-virulent) could be transformed by the heat-killed S bacteria, and become virulent, scientists assumed that there is some kind of “transforming principle” that is involved.
Avery and his colleagues cultured heat-killed S cells and tried t separate cellular components that could possibly be that “transforming principle”. Molecule of DNA gave positive result in a chemical test and also when enzymes able to degrade DNA were introduced, the transforming activity was eliminated.
<span>a conclusion reached on the basis of evidence and reasoning.</span>
