Through a sequence similarity search, a researcher identifies a gene whose predicted protein product has a putative
function of a photosynthesis-enhancing enzyme. Which experimental method could be performed to verify this function?
a. PCR
b. an assay measuring photosynthetic productivity
c. identification of signature genes
d. DNA microarray
e. gene knockout
ANSWER: e
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________ were the first vertebrates to live on land and they evolved from ________.
A. Mammals; reptiles B. Reptiles; amphibians C. Amphibians; fish D. Amphibians; lancelets
Mendel's principle of segregation states that:a
alleles from one parent mask the expression of alleles from the other parent. b. alleles separate from each other before forming gametes. c. hybrids will express a phenotype intermediate between the two parental phenotypes. d. true-breeding parents produce offspring of the same phenotype. e. different loci separate from each other
Septicaemia refers to spread of bacterial toxins in blood while toxaemia refers to clinical blood infection by large and multiplying pathogenic microbes
a. true b. false
Predict what would happen if a fruit fly regulatory gene that codes for a leg replaced a frog gene in the same position
A) The frog would produce a fruit fly leg. B) The frog would produce a leg that is part frog and part insect. C) The frog would produce a frog leg. D) The gene would kill the frog embryo.