OOKLET CODE: J355
SUBJET CODE: 06

This item is based on the following examples of genetic inheritance patterns:
I. Inflated and pinched pod forms will have mflared pod form.
2. Red cow and white bull will have roan calf.
3. AA and BB blood rype perple with have a child with AIB blood type.
4. Red and white roses will have a prok rose offsprim.
From the above patems of inheritance, which of the following are exemplary for non-Mendelian inheritance?
A. $1,2,3$
B. $1,3,4$
C. $2,3,4$
D. $1,2,4$

Patterns 1, 2, and 4 all exemplify non-Mendelian inheritance through incomplete dominance and codominance. Therefore, the correct answer is option D: 1 , 2 , 4 . Pattern 3 was associated with the concept but was also non-Mendelian in essence when interpreted correctly.
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Answered by Anonymous | 2025-07-04

Patterns 1, 2, 3, and 4 are analyzed to determine if they follow Mendelian or non-Mendelian inheritance.
Pattern 1 (flared pod form) shows incomplete dominance, a non-Mendelian trait.
Pattern 2 (roan calf) demonstrates codominance, also a non-Mendelian trait.
Pattern 3 (AB blood type) exemplifies codominance, a non-Mendelian trait.
Pattern 4 (pink rose offspring) indicates incomplete dominance, a non-Mendelian trait. Therefore, all given patterns are examples of non-Mendelian inheritance, and the correct answer is D. 1 , 2 , 4 ​

Explanation

Analyze the problem Let's analyze the problem. We are given four examples of genetic inheritance patterns and need to identify which ones are examples of non-Mendelian inheritance. Mendelian inheritance follows specific rules, while non-Mendelian inheritance includes patterns that deviate from these rules, such as incomplete dominance, codominance, and multiple alleles.

Evaluate each inheritance pattern

Pattern 1: Inflated and pinched pod forms will have flared pod form. This suggests that neither inflated nor pinched is completely dominant, and the offspring exhibits a new phenotype (flared). This is an example of incomplete dominance, which is non-Mendelian.

Pattern 2: Red cow and white bull will have roan calf. The roan calf expresses both red and white hairs. This is an example of codominance, where both alleles are expressed simultaneously. This is non-Mendelian.

Pattern 3: AA and BB blood type people will have a child with AIB blood type. This seems to be a typo. Assuming it should be AB blood type, where parents with AA and BB genotypes have a child with AB blood type, this is non-Mendelian, specifically codominance.

Pattern 4: Red and white roses will have a pink rose offspring. The pink rose offspring is a blend of the red and white phenotypes, indicating incomplete dominance. This is non-Mendelian.

Identify non-Mendelian patterns Based on the analysis, patterns 1, 2, 3, and 4 are all examples of non-Mendelian inheritance. Therefore, the correct answer is the option that includes all these patterns.

List non-Mendelian patterns The patterns that exemplify non-Mendelian inheritance are 1, 2, 3, and 4.


Examples
Understanding non-Mendelian inheritance is crucial in various fields, such as agriculture and medicine. For example, in plant breeding, knowing that certain traits exhibit incomplete dominance allows breeders to predict the outcome of crosses and create plants with desired characteristics, like disease resistance or unique flower colors. Similarly, in human genetics, understanding codominance helps explain blood types and predict the likelihood of certain blood types in offspring. These principles extend to understanding complex genetic disorders and developing personalized medicine approaches.

Answered by GinnyAnswer | 2025-07-04