In a cross between a red flowered plant (RR) and a white flowered plant (rr), what will be the color of the flowers in the F1 generation? (2019)
Practice Questions
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Q1
In a cross between a red flowered plant (RR) and a white flowered plant (rr), what will be the color of the flowers in the F1 generation? (2019)
Red
White
Pink
Purple
The F1 generation will have red flowers since red is dominant over white.
Questions & Step-by-step Solutions
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Q
Q: In a cross between a red flowered plant (RR) and a white flowered plant (rr), what will be the color of the flowers in the F1 generation? (2019)
Solution: The F1 generation will have red flowers since red is dominant over white.
Steps: 6
Step 1: Identify the genotypes of the parent plants. The red flowered plant has the genotype RR, and the white flowered plant has the genotype rr.
Step 2: Understand that 'R' represents the allele for red flowers and 'r' represents the allele for white flowers.
Step 3: Recognize that red (R) is dominant over white (r). This means that if a plant has at least one 'R' allele, it will have red flowers.
Step 4: Combine the alleles from both parent plants to determine the genotype of the F1 generation. The red flowered plant (RR) can only contribute 'R' alleles, and the white flowered plant (rr) can only contribute 'r' alleles.
Step 5: The F1 generation will have the genotype Rr, which means it has one 'R' allele and one 'r' allele.
Step 6: Since red is dominant, the flowers in the F1 generation will be red.