In a population of frogs, RR homozygotes produce an average of 5 offspring that survive to reproduce. Rr frogs produce 4, and rr frogs produce 1. The fitness of the three genotypes w11, w12, and w22 are respectively
A) 5, 4, and 1.
B) 0.5, 0.4, and 0.1.
C) 1.0., 0.8, and 0.2.
D) 0.5, 1.0, and 0.1.
E) None of these
C
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a. petals b. carpels c. stamens d. receptacles e. sepals
__________ is a fungal chemical that shows promise as an anticancer agent
a. Pencillin b. Fumigallin c. Ergot compounds d. Psilocybin e. Aflatoxin
Rising air temperatures at the leaf surface can increase evaporation, although evaporation can also cool a leaf
somewhat.
a. True b. False
A karyotype
a. compares one set of chromosomes to another. b. is a visual display of chromosomes arranged according to size. c. is a photograph of cells undergoing mitosis during anaphase. d. of a normal human cell shows 48 chromosomes. e. can reveal the genotype of an individual.