A pea plant with yellow seeds was crossed to a plant having green seeds. What will happen in the F1 generation; if the plants are true breeding?
Correct answer: D. All the seeds will be yellow
- A. Half of the seeds will be yellow
- B. All of the the seeds will be green
- C. Both phenotypes will be present in a ratio of 1:2:1
- D. All the seeds will be yellow
Explanation
Option (d) suggests that all the seeds in the F1 generation will be yellow. This statement is correct. Since yellow seed color is dominant (Y) over green seed color (y), all the seeds in the F1 generation will have the dominant allele (Y) and, therefore, be yellow.
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Mendel's laws explain segregation, independent assortment and the prediction of genetic ratios using alleles, genotypes and phenotypes. The chapter also covers linked genes, recombination and crossing over during meiosis, then applies pedigree reasoning to X-linked recessive traits, which show different inheritance patterns in males and females.
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