Answer:
Population density just represents the average number of individuals per unit of area or volume.
Population distribution describes how the individuals are distributed, or spread throughout their habitat.
Explanation:
Answer:
<em>The assumption that can be made based on this similarity is "Out of the animals listed, calves are most genetically similar to humans."</em>
Explanation:
A phylogenetic tree can be described as a diagram which represents the evolutionary similarities and differences among different organisms. It tells which organisms have some common ancestor in common.
The similarity between the early stages of development in the fish, calf, humans and tortoise embryo show that they might have common ancestors. Further similarities between the calf and humans show that they are more similar to one another as compared to the other species.
Natural gas is transported through pipelines!
<h2>Replication </h2>
Explanation:
Meselson and Stahl began the experiment by growing E. coli in medium, or nutrient broth, containing a "heavy" isotope of nitrogen
When grown on medium containing heavy nitrogen the bacteria took up the nitrogen and used it to synthesize new biological molecules including DNA
After many generations growing in the heavy nitrogen, the nitrogenous bases of the bacteria's DNA were all labeled with heavy nitrogen and then the bacteria were switched to bacteria containing a light nitrogen and allowed to grow for several generations
They then measured the density of the DNA using density gradient centrifugation
Results obtained contained heavy DNA,Light DNA and hybrid of Light and heavy DNA
The experiment done by Meselson and Stahl demonstrated that DNA replicated semi-conservatively, meaning that each strand in a DNA molecule serves as a template for synthesis of a new, complementary strand
Had it been conservative mode of replication, DNA replication would have resulted in one molecule consisting of both original DNA strands (identical to the original DNA molecule) and another molecule consisting of two new strands (with exactly the same sequences as the original molecule)
Commensalism relationship is shown between cattle egret and cattle.
Usually cattle egrets follow herds of large hoofed mammals such as cattle, buffalo. They eat the insects that have been stirred up by the buffalo as they move. This relationship is commensalism, because the birds benefit but the ungulate is neither harmed nor helped.
The cattle egret and grazing cattle in a close association is a classic example of commensalism. It is a common sight in rural areas where one can see ticks hovering over the cattle. They feed on cattle's blood and hence are harmful to them as they can transmit several diseases. The cattle egret and grazing cattle in a close association is a classic example of commensalism. It is a common sight in rural areas where one can see ticks hovering over the cattle. They feed on cattle's blood and hence are harmful to them as they can transmit several diseases.
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