10. A white flowered plant is crossed with a plant that is heterozygous for the trait. What percentage of the offspring will have purple flowers? 11. Two plants, both heterozygous... 10. A white flowered plant is crossed with a plant that is heterozygous for the trait. What percentage of the offspring will have purple flowers? 11. Two plants, both heterozygous for the gene that controls flower color are crossed. What percentage of their offspring will have purple flowers? What percentage will have white flowers?
Understand the Problem
The question is about genetics, specifically dealing with flower color inheritance. The image contains two genetics problems. We need to use Punnett squares to determine the genotypes and phenotypes of the offspring to calculate the percentages of purple and white flowers, given parental genotypes.
Answer
10. 50% purple flowers, 11. 75% purple and 25% white flowers.
- 50% of the offspring will have purple flowers.
- 75% of the offspring will have purple flowers, and 25% will have white flowers.
Answer for screen readers
- 50% of the offspring will have purple flowers.
- 75% of the offspring will have purple flowers, and 25% will have white flowers.
More Information
Understanding basic genetics and Punnett squares is key to solving the problems. Here's how the answer is derived:
Question 10: When a white-flowered plant (pp) is crossed with a heterozygous plant (Pp), there are two possible offspring genotypes: Pp (purple) and pp (white), each with a 50% probability.
Question 11: When two heterozygous plants are crossed (Pp x Pp) the offspring can be PP (purple), Pp (purple), pP (purple), or pp (white). This results in 75% purple flowers and 25% white flowers.
Tips
A common mistake is not correctly setting up the punnett square. Remember, heterozygus means different alleles, and the white flowers are expressed with recessive alleles.
Sources
- A white flowered plant is crossed with a plant that is heterozygous ... - homework.study.com
- [PDF] Genetics Practice Problems - cbsd.org
- [PDF] Simple Genetics Practice Problems KEY - readington.k12.nj.us
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