Read the following statements:
(A). Alleles are alternative forms of a gene.
(B). Genes located in the same chromosomes never show independent segregation.
(C). Calvin Bridges proposed the genic balance theory of sex determination in Drosophila.
(D). In chickens, the character "creeper" is recessive for its effect on phenotype but dominant for lethality.
Choose the correct answer from the options given below:
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For lethal alleles like the creeper gene in chickens or yellow coat in mice, the allele is dominant for its phenotypic effect but recessive for its lethal effect (homozygous lethality).