Which of the following best supports the idea that organisms and environments have changed over time?
A. the discovery of fossilized fern plants in Antarctica
B. the production of sterile hybrid animals such as the mule
C. the many different species of plants in tropical areas
D. the ability of many animals to learn new behaviors
Answer: A. the discovery of fossilized fern plants in Antarctica
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Whole genome sequencing is often approached by a shotgun sequencing approach in which:
A. large genomes are randomly digested, short fragments are sequenced, and the overlapping sequences are assembled in order. B. large genomes are digested only once, large fragments are sequenced, and the overlapping sequences are assembled in order. C. large genomes are randomly digested, short fragments are sequenced, and the overlapping sequences are assembled from largest to smallest. D. large genomes are randomly digested, short fragments are sequenced, and the overlapping sequences are assembled from smallest to largest. E. All of the answer options are correct.
Chrysanthemums are short-day plants, requiring a night length of longer than 12 hours to flower
Under which of the following conditions should chrysanthemums flower? 1: Night length 14 hours, day length 10 hours 2: Night length 10 hours, day length 14 hours 3: Night length 14 hours, day length 10 hours; night interrupted in the middle by an intense red flash 4: Night length 10 hours, day length 14 hours; day interrupted in the middle by half an hour of darkness
a. only 1 b. only 2 c. both 1 and 3 d. both 2 and 4 e. 2, 3, and 4
In phloem, organic compounds flow through _____
a. collenchyma cells c. vessels b. sieve tubes d. tracheids
Describe platelets
What will be an ideal response?