The study of genes is called genetics. In a gene pair, one gene is called recessive and another gene is called dominant.
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The genotype of another parent is bb. Thus, it will produce only one type of gamete which will contain b. The cross would result in the production of offspring with two types of genotypes in equal proportions. The two genotypes would be Bb and bb.
The phenotypic ratio would be 1 (broadleaves): 1 (narrow leaves).
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