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In daffodils yellow flower color is dominant over white flower color. What is the genotype of any yellow-flowering plant resulting from this species?
a. Yellow (Y) and white (y) alleles present on two chromosomes.
b. A yellow allele (Y) present on both homologous chromosomes.
c. A yellow allele (Y) present on at least one of the two homologous chromosomes.
d. Yellow (Y) and white (y) alleles present on one chromosome.

Sagot :

lulu1991
The answer is c. A yellow allele present on at least one of the two homologous chromosomes. Because the dominant genotype just needs one dominant allele. So the common character is at least one yellow allele.
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