Chickadees were given an opportunity to store seeds in 72 possible storage sites consisting of holes drilled in small trees that had been placed in an aviary. Typically, the seeds were placed in only 4 or 5 storage sites. The chickadees were then removed from the aviary, the seeds removed from the storage sites, and each hole covered. A day later, the chickadees were returned to the aviary and they spent nearly 5 times as long pulling at the covers on storage sites than at the covers on sites where they had not stored food. This experiment indicates that chickadees

TLS Online TPP Program

#Question id: 18929

#Unit 13. Methods in Biology

The heterozygosity of any locus can be ascertained by

TLS Online TPP Program

#Question id: 18930

#Unit 13. Methods in Biology

The genomic DNA to be cloned is prepared by partial digestion with restriction endonucleases to obtain a suitable fragment size. Genomic fragments are then separated by using

TLS Online TPP Program

#Question id: 18936

#Unit 13. Methods in Biology

Cloning vectors with the transcription and translation signals needed for the regulated expression of a cloned gene are called 

TLS Online TPP Program

#Question id: 18937

#Unit 13. Methods in Biology

Cloning techniques can be used not only to overproduce proteins but to produce protein products altered, subtly or dramatically, from their native forms. Specific amino acids may be replaced individually by 

TLS Online TPP Program

#Question id: 18938

#Unit 13. Methods in Biology

If the sequence of at least the end portions of a DNA segment of interest is known, the number of copies of that DNA segment can be hugely amplified with the 

TLS Online TPP Program

#Question id: 18939

#Unit 13. Methods in Biology

If a DNA sequence is present in higher than usual amounts in a sample can be analysed using pcr