Example : Sello crosses two pure breeding garden pea plants in the laboratory. Plant A produces yellow peas and plant B green peas. He knows that the gene for yellow peas (Y) is dominant over the gene for green peas (y). The diagram below shows the results he obtained for two generations of pea plants. Study the diagram and answer the questions that follow. Yellow (Y) Green (y) Give the genotype for plant A and plant B. YY B – yy ( explain to learners that if all the individuals in the second generation have the dominant gene, than one of the parent will have to be either homozygous recessive and the other will have to be homozygous dominant. Provide the genotype and phenotype for Plant D, and G. Plant D – Yy Plant G - yy 15 min Conclusion: Teacher supervises learners work to check that the learners are on the right track. Answers are written on the board after learners give feedback with the first two examples.
Example : Sello crosses two pure breeding garden pea plants in the laboratory. Plant A produces yellow peas and plant B green peas. He knows that the gene for yellow peas (Y) is dominant over the gene for green peas (y). The diagram below shows the results he obtained for two generations of pea plants. Study the diagram and answer the questions that follow. Yellow (Y) Green (y) Give the genotype for plant A and plant B. YY B – yy ( explain to learners that if all the individuals in the second generation have the dominant gene, than one of the parent will have to be either homozygous recessive and the other will have to be homozygous dominant. Provide the genotype and phenotype for Plant D, and G. Plant D – Yy Plant G - yy Conclusion: Teacher supervises learners work to check that the learners are on the right track. Answers are written on the board after learners give feedback with the first two examples. 15 min
gr-12-life-sciences-participant-s-manual-aprmay_2018.docx