A condition where an individual heterozygous for two pairs of linked genes ( AaBb ) possesses the two dominant genes on one homologous chromosomes pair and two recessive on the other it is said to be

Options

A. Cis - arrangement
B. Trans - arrangement
C. Partly cls party trans
D. More than one option is correct

Answer

To solve the question, we need to understand the concepts of linked genes, heterozygosity, and the terms "cis" and "trans" configurations.

### Step-by-Step Solution:

1. **Understanding the Genotype**: The individual in question is heterozygous for two pairs of linked genes, represented as AaBb. This means that the individual has one dominant allele (A) and one recessive allele (a) for the first gene, and one dominant allele (B) and one recessive allele (b) for the second gene.

2. **Identifying the Linkage**: Since the genes are linked, they are located close together on the same chromosome. This affects how they are inherited together during meiosis.

3. **Cis Configuration**: The question specifies that the two dominant alleles (A and B) are located on one homologous chromosome, while the two recessive alleles (a and b) are located on the other homologous chromosome. This arrangement is referred to as "cis configuration" or "cis arrangement."

4. **Trans Configuration**: In contrast, if one chromosome had one dominant allele and one recessive allele (e.g., Ab) and the other chromosome had the opposite (e.g., aB), this would be known as "trans configuration."

5. **Conclusion**: Given that the dominant alleles are on one chromosome and the recessive alleles on the other, the correct answer to the question is that this arrangement is called "cis arrangement."

### Final Answer:
The condition is said to be **cis arrangement**.

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