.Edu is probably the most reliable source because this means the site has valid information.
Crossover is the first way that genes are shuffled to give rise to genetic diversity. Crossover takes place in sexual reproduction.
Chromosomes line up side by side and break off pieces of themselves, then trade those pieces with each other.
When they break at the same place (locus) in the sequence of base pairs, the result is an exchange of genes called genetic recombination. That is the normal way for crossover to occur.
Genetic recombination ensures that the daughter cells produced have a different genetic makeup from the parent cell and thus diversity is created.
Answer:
It is not a reliable test because the people's answer may be biased by prior familiarity with the brands they are testing.
Explanation:
The results are most likely unreliable because if the people who are testing the two brands of lemonades (brand X and Y) know the two brands already from before the test, their responses may be biased according to what they believe <em>a priori</em> that is better. In other words, they could simply choose their favorite brand without objectively analyzing the taste.
Answer:
Protons
Explanation: Protons are particles in the nucleus. They give off that positive charge.
