In a species, the weight of newborn ranges from \(2\) to \(5\; \mathrm{kg} .97 \%\) of the newbom with an average weight between \(3\) to \(3.3\; \mathrm{kg}\) survive whereas \(99 \%\) of the infants born with weights from \(2\) to \(2.5\; \mathrm{kg}\) or \(4.5\) to \(5 \;kg\) die. Which type of selection process is taking place?

A Directional Selection
B Stabilizing Selection
C Disruptive Selection
D Cyclical Selection

Verified Solution

Answer & Solution

Correct Answer

(B) Stabilizing Selection

Step-by-step Solution

Detailed explanation

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Match List \(I\) with List \(II\) : Choose the correct answer from the options given below :

List \(I\)	List \(II\)
\(A.\) Down's syndrome	\(I.\) \(11^{th}\) chromosome
\(B.\) \(\alpha -\)Thalassemia	\(II.\) \(X\) chromosome
\(C.\) \(\beta -\)Thalassemia	\(III.\) \(21^{st}\) chromosome
\(D.\) Klinefelter's syndrome	\(IV.\) \(16^{th}\) chromosome

NEET 2024 Medium

Match List \(I\) with List \(II\)

List \(I\)	List \(II\)
\(A\). Two or more alternative forms of a gene	\(I\). Backcross
\(B\). Cross of \(F_1\) progeny with homozygous recessive parents	\(II\). ploidy
\(C\). Cross of \(F_1\) progeny with any of the parents	\(III\). Allele
\(D\). Number of chromosome sets in plant	\(IV\). Test cross

Choose the correct answer from the options given below:

NEET 2024 Medium

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