The egg and sperm cells of certain frogs each have 13 chromosomes. How many chromosomes would the muscle cells of these frogs contain?A7B26C52D13

1. Break Down the Problem

To determine the number of chromosomes in the muscle cells of the frogs, we need to understand the relationship between egg/sperm cells and muscle cells in terms of chromosome count. Egg and sperm cells are haploid (containing half the total number of chromosomes), while muscle cells are diploid (containing the full set).

2. Relevant Concepts

• Haploid Cells (n): Egg and sperm cells have half the number of chromosomes (n).
• Diploid Cells (2n): Muscle cells have a complete set of chromosomes (2n).

Given that the egg and sperm cells have 13 chromosomes, this means: $n = 13$ To find the diploid number (which is for the muscle cells): $2n = 2 \times 13$

3. Analysis and Detail

Now calculate the number of chromosomes in the muscle cells: $2n = 2 \times 13 = 26$

4. Verify and Summarize

We have calculated that the muscle cells contain $2n = 26$ chromosomes. This is consistent with the understanding that muscle cells (diploid) should have double the chromosome count of gametes (haploid).

Final Answer

The muscle cells of these frogs contain 26 chromosomes (Option B).