Question

Law of Mendel, which is not completely applicable is:

• A. Codominance
• B. Law of segregation
• C. Law of independent assortment
• D. Law of dominance

Answer 1

The correct option is C

Law of independent assortment

The correct option is C:

Explanation of correct option:

1. The law of independent assortment states that in a dihybrid cross, two alleles get assorted independently of each other during gamete formation.
2. This law applies to the genes present on two different chromosomes.
3. Whereas the genes located on the same chromosome show linkage.
4. Thus, in the case of linkage, the law of independent assortment may not be applicable.

Explanation of incorrect options:

Option A:

1. Codominance is a non-mendelian inheritance.
2. In codominance, two alleles of the same gene are expressed separately in an individual, resulting in different traits.

Option B:

1. The law of segregation states that the pair of alleles has to undergo segregation or separation during gamete formation.
2. This law is entirely applicable.

Option D:

1. The law of dominance states that the trait that expresses itself in the heterozygous condition is dominant, and the trait that remains unexpressed is called recessive.
2. This law is also applicable for heterozygous pairs of alleles.

Final answer: Law of Mendel, which is not entirely applicable, is the law of independent assortment.