Gene flow is NOT a requirement of natural selection.

a. true
b. false


a. true

Biology & Microbiology

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This image is an example of _____

1.a haploid gametophyte stage of red algae 2.a heterotrophic water mold 3.a freshwater diatom 4.one ciliate preying upon another

Biology & Microbiology

In codominant inheritance, ____

a. there is partial phenotypic expression of one member of a gene pair in the homozygous condition b. there is full phenotypic expression of both members of a gene pair in the heterozygous condition c. the interaction of two or more non-allelic genes controls a single phenotype d. two recessive alleles interact and express themselves as a single dominant trait e. the phenotype of a heterozygote is intermediate to those of the parents

Biology & Microbiology

Which monomer units combine to form nucleic acids?

A) amino acids B) fatty acids C) nucleotides D) sugars

Biology & Microbiology

A tumor-specific antigen is:

A. a general marker for all known human tumors. B. a specific marker for leukemias. C. unique to the tumor of an individual patient. D. nonspecific to all patient populations.

Biology & Microbiology