<ol>
<li>Which of the following is the best description of the relationship between species and population?</li>
</ol>
<p>The answer was "A population is a group of organisms occupying a specific area". Organisms can be from different species. So this answer has a loophole, doesn't it?</p>
<ol>
<li>Which of the following is not part of Darwin's theory of natural selection?</li>
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<p>A. Genetic variation exists among individuals in a population</p>
<p>C. Early settlers saved seeds only from the most productive crops to plant the following year.</p>
<p>Both are wrong. C is artificial selection, while although A is true, Darwin didn't theorize on genes</p>
<p>After meiosis I in humans, how many chromosomes and cells are there?</p>
<p>The answer is 46 and 2. They said that during interphase, DNA replicates so the number of chromosome when divided into two is still 46. This is wrong, right?</p>
<p>Meiosis cells start out diploid with 46 chromosomes. Then they replicate to get 92. After meiosis 1, there should be 2 cells with 46 chromosomes each. The book is right</p>
<p>@drones: I thought replication happens BEFORE meiosis? It starts out with 46 chromosomes, each with 2 chromatids (already replicated). After meiosis I, each cell only has 23. After meiosis II, which is basically the same as meiosis, there are 4 daughter cells, 23 chromosomes in each.</p>
<p>You are wise, grasshopper. After Meiosis I, the daughter cells are haploid. Each cell has 23 chromosomes. Each chromosome has two chromatids, leading to 46 chromatids, as you have stated.</p>
<p>The Darwin question is bogus. I can key or not key either one. Darwin incorporated the concept of artificial selection into his research before publishing The Origin, so C could be part of his theory. As far as A goes, it depends on how much importance you place on the word “genetic.” The existence of variation within a population is central to Natural Selection. I’d forget about this question, as it is poorly written.</p>
<p>Population can have different meanings in different context. A species is a group of organisms that can, in nature, reproduce and produce fertile offspring. It depends on your prefix for population. You can refer to the Human Population (one species) or you can refer to the Predator Population (could be several species). Without the appropriate adjective, it one of those squishy words.</p>