Answer:
Pleiotropy
Explanation:
The single gene responsible for expressing many characters/traits is called pleiotropy. The sickle cell anemia disease is pleiotropic that is caused by HBB gene mutation. The mutation results in multiple traits (consequences) due to single gene mutation.
The RBCs shape changed to sickle shape this results in low energy levels, blood clots, and strokes. The mutation forms HbS (hemoglobin S) from hemoglobin beta globin subunits. Thus, this is an example of <u>Pleiotropy.</u>
The natural resource management aims at saving the natural resource for the coming generation without depriving the demand of the present generation. There must be a sufferable way to use the natural resources because unlimited use of resources will guide to some problems.
The natural resource management also seeks at using the natural resources in its pure shape and making it available to every possible place.
<h3>What are the advantages of natural resource management?</h3>
When watched for in the right way, they can help us to reduce flooding, enhance air quality and supply materials for construction. They also provide a home for some rare and stunning wildlife and iconic landscapes we can relish and which boost the economy via tourism.
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I think the answer is D. Both a and b
Answer:
This results in a third phenotype in which the expressed physical trait is a combination of the phenotypes of both alleles.
Explanation:
an example is like if a red and white flower create another flower the flower will be pink because both alleles are dominant and will be phenotypically expressed.
Crossing over is the main event in meiosis and heredity as it leads to genetic variation.
<h3>What is genetic variation?</h3>
Genetic variation is the changes that take place in the genes of individuals that can lead to the formation of new characters.
it generally occurs in meiosis specifically during crossing over.
Thus, it can be concluded that crossing over between non-sister chromatids during meiosis is significant in heredity as it leads to genetic variation.
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