Moderate

The situation when two alternative forms are expressed completely is said to have:

Correct answer: A. Codominance

  • A. Codominance
  • B. Sex-influenced traits
  • C. Multiple alleles
  • D. Incomplete dominance
  • E. Sex-limited traits

Explanation

Codominance is a genetic scenario where both alleles in a heterozygous individual are fully expressed, leading to a phenotype that exhibits traits from both alleles. For instance, in certain flowers, one allele may be responsible for producing red petals while another produces white petals; in the case of codominance, the resulting flowers can display both red and white petals concurrently.

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About Inheritance

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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