Question

pea plants can produce yellow seeds or green seeds. a plant that grew from a yellow seed was crossed with a plant that grew from a green seed. all of the seeds that developed were yellow. plants that grew from those yellow seeds were crossed. some of the seeds that developed were green. why did the trait for green seed color seem to disappear for one generation? a. green seed color is dominant. b. green seed color is recessive. c. green seed color is homozygous dominant. d. green seed color is heterozygous recessive.

Explanation:

In genetics, when a trait disappears in one generation and reappears in the next, it is likely a recessive trait. Recessive traits are masked by dominant traits in heterozygous individuals. In the first - cross, all seeds were yellow because the yellow - seed trait is dominant and masked the green - seed trait. When the heterozygous yellow - seed plants were crossed, the recessive green - seed trait reappeared in some offspring.

Answer:

B. Green seed color is recessive.