Which of the following is not an example of p | vedclass

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(D) Pleiotropy is a phenomenon where a single gene influences multiple,seemingly unrelated phenotypic traits.$1$. Phenylketonuria $(PKU)$ is caused by

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$AB$ blood group

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(D) Pleiotropy is a phenomenon where a single gene influences multiple,seemingly unrelated phenotypic traits.$1$. Phenylketonuria $(PKU)$ is caused by a mutation in the gene for the enzyme phenylalanine hydroxylase,leading to multiple effects like mental retardation,reduced hair and skin pigmentation.$2$. In pea plants,the gene controlling starch synthesis also influences seed shape (round vs. wrinkled) and starch grain size.$3$. Sickle cell anemia is caused by a mutation in the $\beta$-globin chain of hemoglobin,which affects the shape of red blood cells,leading to various systemic complications.$4$. The $AB$ blood group system is an example of codominance and multiple alleles,where the $I^A$ and $I^B$ alleles are codominant,but it does not represent pleiotropy.

Which of the following is not an example of pleiotropy?

Similar Questions

Find the correct statement.
$(1)$ Generally a gene regulates a trait,but sometimes one gene has an effect on multiple traits.
$(2)$ The trait $AB$-blood group of man is regulated by one dominant allele and another recessive allele. Hence it is co-dominant.

$A$ single gene exhibits more than one phenotypic expression. This phenomenon is known as:

$A$ pleiotropic gene is responsible for which of the following conditions?

What is pleiotropy? Explain with an example.

In an organism,mutation in a single gene exhibits multiple phenotypic expressions. Identify the underlying genetic mechanism in the above instance.

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