A gardener in Canada wants to surprise his mother on her birthday and make her favorite hibiscus bush flower in May instead of at the end of June. The bush is growing in the greenhouse
Which of the following might make the hibiscus bush flower early? A) grafting leaves of a hibiscus that was exposed to long night
B) grafting leaves of a hibiscus that was exposed to short night
C) exposing flower buds of the hibiscus bush to long nights
D) exposing flower buds of the hibiscus bush to short nights
B
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Which of the following bacterial species is part of animal flora and transmitted to humans during close animal contact, including bites?
a. S. paucimobilis b. Eikenella corrodens c. P. multocida d. W. virosa
The animals used in the text to show variation in
domesticated forms are a. pigeons. b. chickens. c. pigs. d. dogs. e. cats.
The relatively high percentage of individuals in West Africa who are heterozygous for the sickle cell trait is an
example of _____. a. natural selection b. genetic drift c. spontaneous mutational spread d. heterozygote disadvantage e. the founder effect
Exogenous antigens are processed for immune recognition by ________ cells
A) dendritic B) all nucleated C) macrophage D) helper T E) dendritic and macrophage