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How many types of gametes will be produc...

How many types of gametes will be produced by a genotype AaBbCC if all the genes are showing incomplete linkage ?

A

4

B

8

C

2

D

6

Text Solution

AI Generated Solution

The correct Answer is:
To determine how many types of gametes will be produced by the genotype AaBbCC, where the genes are showing incomplete linkage, we can follow these steps: ### Step-by-Step Solution: 1. **Identify the Genotype**: The given genotype is AaBbCC. Here, A and B are heterozygous (Aa and Bb), while C is homozygous (CC). 2. **Focus on Heterozygous Genes**: Since C is homozygous (CC), it will not contribute to the variation in gametes. Therefore, we only need to consider the heterozygous genes A and B. 3. **Determine Possible Alleles**: For gene A, the alleles are A (dominant) and a (recessive). For gene B, the alleles are B (dominant) and b (recessive). 4. **Calculate Gamete Combinations**: When considering two genes, the number of different gametes can be calculated using the formula \(2^n\), where \(n\) is the number of heterozygous gene pairs. In this case, we have two heterozygous pairs (A and B), so: \[ n = 2 \quad \Rightarrow \quad 2^n = 2^2 = 4 \] 5. **List the Gametes**: The possible combinations of alleles from Aa and Bb can be listed as follows: - AB (A from A and B from B) - Ab (A from A and b from B) - aB (a from A and B from B) - ab (a from A and b from B) 6. **Conclusion**: Since C is homozygous, it does not affect the gamete combinations. Therefore, the total number of different types of gametes produced by the genotype AaBbCC is 4. ### Final Answer: **The number of types of gametes produced by the genotype AaBbCC is 4.** ---
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