Answer:
Sequence a DNA fragment.
Explanation:
Dideoxyribonucleotides may be defined as the DNA molecule that lacks hydroxyl group at 2 and 3 position of the pentose sugar. These molecule are important in the molecular biology.
The sequencing of a DNA fragment means to determine the sequence of the nucleotides in a DNA molecule. The dideoxyribonucleotides is used to tag the target DNA fragment and known the sequence of the target DNA molecule.
Thus, the correct answer is option (C).
Introducing a predator means there will be less prey which will help balance the population of prey. Some predators may run out of food and there might be no prey left for them. If the prey were removed the predator population would decline.
I believe it should be true, please correct me if im wrong
The correct answer is fixed migration pattern.
Extinction means termination of last member of a particular species. This can be due to various factors. The reason could be natural or human interventions. The best characteristics of an organism to be less likely to face extinction are the fixed migration pattern. Migration of that particular species in a fixed pattern will make them adapt different environment. This saves the species from natural extinction. Even if the species of a particular geographical area dies the migrated species will be alive to breed and save the species from extinction.
Answer: Option B.
Neural crest and peripheral nervous system.
Explanation:
Neural crest are bilateral paired cells of the neural tube that arise from the ectoderm layer of the embryo. Thesescells move to different part of the body and differentiate into various cell types like melanocytes,cartilage and bone, smooth muscle, craniofacial, neurons, gangalia e.t.c. The neural crest running through neural tube develop into peripheral nervous system after birth. Peripheral nervous system consist of neurons and gangalia outside the nervous system The peripheral nervous system connect the central nervous system to organs, skin and limbs.
