Mutation generally produces

Options

A. recessive genes
B. lethal genes
C. polygenes
D. dominant genes

Explanation

### Step-by-Step Text Solution:

1. **Understanding Mutation**: Mutation refers to any change in the DNA sequence. This can occur in various forms, such as point mutations (where a single base pair is altered) or frame shift mutations (where there is an addition or deletion of DNA nucleotides).

2. **Types of Genes Produced by Mutation**: When mutations occur, they can lead to the production of different types of genes. The question lists four options: recessive genes, lethal genes, polygens, and dominant genes.

3. **Recessive Genes**: Most mutations tend to produce recessive genes. These genes are often not expressed in the phenotype unless an individual has two copies of the mutated gene. This means that recessive mutations can remain hidden in a population.

4. **Lethal Genes**: If a mutation results in a dominant gene, it can lead to lethal effects, meaning that the organism may not survive or may develop serious health issues. Examples include genetic disorders like Down syndrome and Turner syndrome.

5. **Polygens**: Polygens are a set of genes that work together to influence a particular trait. They are not directly produced by mutations but rather represent a combination of multiple genes affecting traits like height or skin color.

6. **Dominant Genes**: While mutations can lead to dominant genes, these are often harmful or lethal. Therefore, dominant mutations are less common compared to recessive mutations.

7. **Conclusion**: Based on the analysis, the most common outcome of mutations is the production of recessive genes. Thus, the correct answer to the question is that mutation generally produces recessive genes.