Answer:
Option A, B, C, D and E
Explanation:
The first option indicates an early retroviral colonization of large double-stranded DNA viruses, which are the presumed ancestors of the eukaryotic nucleus; and then inappropriate activation of the telomerase can be implicated in the development of cancer by continous elongation of the telomere length without control.
Its activity can also be turned off leading to continuous shortening during replication and bringing about senesence and aging. the T-loops formed by the activity of the telomerase protects the ends of the chromosomes from being recognized as being broken and degradation.
The probability that the offspring of the parents who are both heterozygous in a dihybrid cross are also heterozygous for both genes is 0.25
<h3>What is a dihybrid cross?</h3>
A dihybrid cross is a cross in which two different traits are involved in the crossing.
For example, the trait for height and color of hair in two parents being crossed is a form of a dihybrid cross.
Assuming two two traits are Ss and Yy, where the dominant traits are S and Y and the recessive traits are s and y.
The two individuals are heterozygous for both genes means that their genotype are both SsYy.
The dihybrid cross is shown in the attached image;
Based on the attached image, the heterozygous offspring for both genes SsYy are 4 out of the possible 16 offspring.
The probability of offspring that are heterozygous for both genes = 4/16 = 0.25
In conclusion, in a dihybrid cross, two traits or genes are involved in the cross and a possible number of 16 offspring are produced from the cross.
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Spring balance is affected spring balance is a type of scale which measures the weight of the body by combining the force of an object extending the spring on the balance with the pulling force of gravity exerted on the body
The transfusion reaction that arises from the mixing of incompatible blood types illustrates a/an Hemolytic transfusion reaction.
<h3>Explain the Hemolytic transfusion reaction.</h3>
After receiving blood transfusions, a dangerous complication called a hemolytic transfusion response might develop. The response happens when the recipient's immune system kills the red blood cells that were donated during the transfusion. Red blood cell destruction is known as hemolysis. Other allergic transfusion responses exist that do not result in hemolysis.
<h3>What are the causes of Hemolytic transfusion reaction?</h3>
A high amount of incompatible plasma, which occurs less frequently, and the transfusion of incompatible red blood cells (RBCs) are the two most common causes of acute HTRs that happen during or within 24 hours following the delivery of a blood product. A subsequent immunological reaction to an antigen on the donor's RBCs results in delayed HTRs.
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