Mendel observed that some genetic traits seemed to mask others in the pea plants. The masking trait is referred to as the
A. dominant trait.
B. recessive trait.
C. leading trait.
D. homozygous trait.
E. heterozygous trait.
A. dominant trait.
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What personal characteristics and events in Gregor Mendel's life significantly contributed to his ultimate contribution to the study of inheritance?
A. His training in physics and mathematics at the University of Vienna. B. He failed his physics exam. C. He failed his natural history exam. D. He got his teaching license at the age of 21. E. He got a job as a substitute teacher and enjoyed it.
Genotype means
a. the genes an individual has. b. the number of gametes in an individual. c. the combination of alleles in an individual. d. the observable expression of the genes in an individual. e. the number of chromosomes in an individual.
The pulmonary circuit specifically circulates blood ________
A) from the heart to the lungs B) from the heart to the rest of the body C) from the heart to the brain D) from the heart to the liver
One conclusion that can be drawn from the accompanying figure is that a low ratio of auxin to cytokinin:
a. stimulates root development.
b. stimulates shoot development.
c. results in undifferentiated growth.
d. stimulates the formation of an entire plant.
e. results in no growth.