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Sticklebacks are small fish that live in both marine and freshwater environments. There are two alleles at the Eda gene: M and F. Genotypes MM and MF both have bony armor plating, while genotype FF has low bony armor.

A biologist tracks the survival and reproduction of stickleback in the same freshwater population (Cranby Lake) over one generation. The survival rate for stickleback with low armor plating is 0.19, while the survival rate is 0.67 for bony armored stickleback. On average, surviving low armored stickleback have 6 offspring, while surviving bony armored stickleback have 3 offspring.

What is the relative fitness of Eda genotype FF in Cranby Lake?

Answer :

Final answer:

The relative fitness of Eda genotype FF in Cranby Lake is lower compared to bony armored stickleback. Stickleback with low armor plating (Eda genotype FF) have a survival rate of 0.19 and an average of 6 offspring, while bony armored stickleback have a survival rate of 0.67 and an average of 3 offspring.

Explanation:

The relative fitness of Eda genotype FF in Cranby Lake can be determined by comparing its survival rate and average offspring number to those of other genotypes. The survival rate for stickleback with low armor plating is 0.19, while the survival rate for bony armored stickleback is 0.67. On average, surviving low armored stickleback have 6 offspring, while surviving bony armored stickleback have 3 offspring.

To calculate the relative fitness of Eda genotype FF, we need to compare its survival rate and average offspring number to the other genotypes. Since Eda genotype FF represents stickleback with low armor plating, its survival rate is 0.19 and its average offspring number is 6. Comparing this to the survival rate and average offspring number of bony armored stickleback (0.67 and 3 respectively), we can conclude that Eda genotype FF has a lower relative fitness in Cranby Lake.

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