Question
Two tall pea plants are crossed and their seeds are planted in a sunny spot in the garden. They received the same amount of water are exposed to the same temperatures and soil conditions. At the end of the growing season, you notice that 75% of the plants are tall and 25% of the plants are short. Which of the following best explains these results?
A. the temperatures outside varied over the growing season which caused some plants to not grow as tall.
the amount of sunlight the plants received was different, thus some did not get enough light to grow tall.
C. the growing conditions of the plants were different, thus some did not get the resources they needed like fertilizer.
D. the plants received different genetic factors from the parents, come received the tall factor and some the short factor.
A. the temperatures outside varied over the growing season which caused some plants to not grow as tall.
the amount of sunlight the plants received was different, thus some did not get enough light to grow tall.
C. the growing conditions of the plants were different, thus some did not get the resources they needed like fertilizer.
D. the plants received different genetic factors from the parents, come received the tall factor and some the short factor.
Answers
GPT-4o mini
The best explanation for the observed results is:
**D. the plants received different genetic factors from the parents, some received the tall factor and some the short factor.**
This is consistent with Mendelian genetics, where traits like height in pea plants can be inherited from their parent plants. In this case, the tall phenotype (dominant trait) appears in 75% of the plants, while the short phenotype (recessive trait) appears in 25% of the plants, indicating a typical 3:1 ratio seen in simple Mendelian inheritance. This suggests the plants' characteristics are determined by their genetic makeup rather than environmental factors, given that the growing conditions were controlled and consistent.
**D. the plants received different genetic factors from the parents, some received the tall factor and some the short factor.**
This is consistent with Mendelian genetics, where traits like height in pea plants can be inherited from their parent plants. In this case, the tall phenotype (dominant trait) appears in 75% of the plants, while the short phenotype (recessive trait) appears in 25% of the plants, indicating a typical 3:1 ratio seen in simple Mendelian inheritance. This suggests the plants' characteristics are determined by their genetic makeup rather than environmental factors, given that the growing conditions were controlled and consistent.