Given an inheritance pattern of incomplete dominance and 81 flowers that are red (R1R1), 18 flowers that are pink (R1R2), and 1 flower that is white (R2R2), the frequency of the R1 allele is 0.9
Indicate whether the statement is true or false
TRUE
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Which of the following best explains why modern seedless vascular plants are confined largely to wet
or humid environments?
a. They require external water for reproduction. b. They do not have true roots. c. They lack stomata. d. They have a dominant sporophyte generation. e. They do not have flowers or fruits.
This is the Lophotrochozoan phylum with the most species, having about 100,000 described living
species.
a. Rotifera b. Mollusca c. Platyhelminthes d. Annelida e. Nemertea
What guides the production of a multi-celled
organism?
a. the sequence of nucleotide bases in DNA b. the sequence of amino acids in a protein c. the sequence of fatty acids in a triglyceride d. the sequence of nucleotides in RNA e. the sequence of monosaccharides in a polysaccharide
What happens at time “C” of the action potential?
a. sodium-potassium pumps are active b. potassium gates close and sodium gates open c. sodium gates close and potassium gates open d. positive feedback begins e. both potassium gates and sodium gates close