A recessive allele is one

A) that produces no effect when present in the homozygous condition.
B) that is not expressed as strongly as a dominant allele.
C) that must be lethal in the homozygous condition.
D) whose effect is masked when paired with a dominant allele.
E) that appears only in a heterozygote.


D

Biology & Microbiology

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The use of ____________________ is banned or restricted in more than 23 countries due to its toxicity

Fill in the blank(s) with correct word

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An mRNA that contains the coding sequence for two or more structural genes is called a

A. polyintronic mRNA. B. polyextronic mRNA. C. polycistronic mRNA. D. polyexpressive mRNA. E. polyrepressor mRNA.

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Principle(s) of the chromosome theory of inheritance include: Check all that apply.

_____ Genes are transmitted from parent to offspring via chromosomes. _____ Gametes contain either a maternal or paternal set of chromosomes. _____ Somatic cells contain a maternal and paternal set of chromosomes. _____ The paternal and maternal chromosomes assort randomly during meiosis. _____ Gametes are haploid and somatic cells are diploid.

Biology & Microbiology