The phenomenon that occurs when two alleles of the same gene are expressed equally in a heterozygote is called

A. incomplete dominance.
B. polygenic inheritance.
C. codominance.
D. dihybrid


Ans: C. codominance.

Biology & Microbiology

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concerning X chromosome inactivation? a. It is an accident of evolution. b. It is an example of dosage compensation. c. It is a gene control mechanism. d. Normal development of female embryos depends on it. e. It does not occur in males

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Which of these statements is true?

a. Environment can readily alter some genotypes. b. Genotype is manifested in phenotype. c. Genetic variation is easier seen than phenotypic variation. d. Variation dies with individuals. e. Phenotype is seen physically in the genotype.

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Gamma aminobutyric acid (GABA) is the most common inhibitory neurotransmitter in vertebrates.

Answer the following statement true (T) or false (F)

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