Answer:
<h2>
Hershey and Chase conducted a series of experiments in order to prove that DNA is the genetic material.</h2>
Explanation:
In this experiment, sulphur-35 and phosphorous-32 were used to radioactively label protein and DNA respectively. The bacteriophage (viruses that infects the bacteria) were allowed to infect the <em>E. coli </em>and it was found that bacterial pellets contains P-32 in their DNA and not S-35. This indicates suphur is not found in DNA, it is present in protein. This experiments proves that DNA is the genetic material and not protein.
So, the correct option is A.
The answer is a:lentil seed pattern is affected by codominance.
Codominance is a form of inheritance in which two different alleles of a gene are both expressed.
In this example, one allele of the gene is responsible for dotted seeds and the other is responsible for spotted seed. If both these traits appear in heterozygous plants, then it is codominance. Let's take for example flowers - after crossing red flower plant with white flower plant, heterozygote offspring would red purple-white flowers, which means it express both traits and it is codominance.
This is not complete dominance because in this case, heterozygote would express a dominant trait (in the example of red and white flowers, heterozygote will be with red flowers). This is not incomplete dominance as well, because in that case, the heterozygote would have some intermediate trait (in the example of red and white flowers, heterozygote will be with pink flowers which is intermediate color between red and white).
Answer:
In our respiratory system, there is a pair of external nostril situated above the upper lip that receives atmospheric air and passed to the pharynx (a common passage for air and food). The pharynx passed this air to the trachea via larynx (known as the soundbox). The trachea is an extended part which is divided into left and right primary bronchi. Bronchi divide into secondary bronchi, tertiary bronchi, and bronchioles that ending up in thin terminal bronchioles. Each terminal bronchiole constitutes a number of irregular-walled, thin and vascularised bag-like structures called alveoli which are the primary sites of gases exchange.
