Image is not available in the question so, the correct image is attached below.
Answer:
D. codes for a specific trait
Explanation:
chromosome is defined as a DNA molecule found in the nucleus of most living cells which carry genes and transfer the genetic information.
The part labelled b in the image is gene. The function of gene is to code for a specific trait.
Genes are responsible for carrying traits that form the genotype and phenotype of an organism. where genotype shows the differences in genetic formation and phenotype shows observable characters in an individual such as color, height and features.
Hence, the correct option is D.
Explanation:
Fixed sample size:
In this fixed sample size the data is studied and checked in order to find a relationship. The benefits it is easy to produce, and with it less reliable outcomes can be given.
Sequential procedures:
→Sequential procedures helps while we are collecting the data.
→At an interim analysis, data collection can be stopped whenever the results are convincing enough to conclude an effect is present.
→Or otherwise the more data can be collected, or if needed the study can be terminated whenever it is extremely unlikely the predicted effect will be observed if data collection would be continued.
→In this two or more blocks of different sizes are prepared for testing.
→Pros being it provides better results and is less time taking, as we can stop once the relation is seen, con being it is difficult to perform.
The windpipe is the trachea
<span>a.increase the size of the muscle cells and the amount of blood that is delivered to the muscle</span>
Answer:
The correct answer will be option-E
Explanation:
Hershey and Chase's experiment was performed to test whether DNA serves as the genetic material or protein.
To perform experiment they grew bacteriophage into radiolabeled phosphorus and sulfur compounds. The phosphorus is an integral part of the structure of DNA whereas proteins contain sulfur in their structure.
In the given condition if radiolabeled nitrogen is utilized then the experiment will fail as the structure of proteins also contains an amino group( NH₂) in their structure as well as DNA. The scientist will not be able to identify whether the DNA is the genetic material or protein.
Thus, option-E is the correct answer.