Contrast constitutive genes from inducible genes. Give two examples for each. ...?

1 answer:

6 0

A constitutive gene is unregulated, which means that its expression level is relatively constant. The expression of a regulated gene varies under different conditions. In bacteria, the regulation of genes oftentimes occurs at the level of transcription by combinations of regulatory proteins and small effector molecules. In addition, gene expression can be regulated at the level of translation or the function of a protein can be regulated after translation is completed.

An inducible gene is a gene whose expression is either responsive to environmental change or dependent on the position in the cell cycle.The rapid activation of gene expression in response to stimuli occurs largely through the regulation of RNA polymerase II-dependent transcription

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Answer:

1 or 100%

Explanation:

Let the allele for seed shape be represented by S.

True breeding spherical shape seeded pea plant will have SS as genotype

True breeding pea plant with wrinkled seeds will have ss as genotype

Crossing the two: SS x ss

Progeny: Ss, Ss, Ss, Ss

Based on the assumption that spherical shape allele is dominant over wrinkle shape allele, all the F1 offspring will have spherical seeds.

Hence, the probability is 1 or 100%

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