The phenotypic ratio resulting from a dihybrid cross of two heterozygote individuals showing independent assortment is expected to be
A) 1:2:1
B) 3:1
C) 9:1:1:3
D) 9:3:3:1
Answer: D
You might also like to view...
Which of the following completes its life cycle by infecting a mosquito and a vertebrate?
a. Plasmodium falciparum b. Trypanosoma brucei c. Trypanosoma cruzi d. Plasmopara viticola
A time-specific life table is constructed by sampling the
A) fate of a group of individuals born at a given time from birth to death. B) fate of a group of individuals born over several time periods from birth to death. C) population to obtain a distribution of age classes during a single time period. D) population to obtain a distribution of age classes during multiple time periods.
Bacteria that grow in mine drainage at pH 1-2 are probably which of the following?
A. alkaliphiles B. acidophiles C. neutrophiles D. obligate anaerobes
Which of the following is NOT one of the "Big Five" mass extinctions?
A) End-Permian (251 Ma) B) End-Triassic (200 Ma) C) Late Devonian (about 360 Ma) D) Eocene-Oligocene (33.9 Ma) E) Terminal Ordovician (444 Ma)