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According to the theory of natural selection, what factor below contributed to the current variations in beak sizes of finch species on the Galapagos islands? a. Finches dispersed to islands where their beak sizes closely matched available seed sizes b. Different finch populations needed to change in order to survive, so beneficial new traits arose c. Non-heritable variation between individual was important for natural selection to work d. Genetic drift allowed beneficial traits to spread throughout the population e. Seeds are limited resource
Are there ribosomes in a plant cell? Yes, in fact there are ribosomes in both plant and animal cells. That is right. Ribosomes are the site of synthesis of polypeptide chain
Future - Development Biology Fertilization in flowering plants is essential for sustaining life on earth. Production of most crops depends on the effectivity of the fertilisat
Ecotone - Nature and Structure of Community The zone of vegetation separating two different types of communities is called ecotone. It is also known as a transition zone. The
Q. How many heart chambers does the amphibian heart have? The amphibian heart has three heart chambers such as one ventricle and two atria.
What are the types of digestion and of digestive system of platyhelminthes? Flatworms have incomplete digestive systems and they show intracellular and extracellular complement
Response to Wounding Wounding of tomato plants by mechanical injury or chewing by insects releases a factor that triggers accumulation of two proteinase inhibitors-throughout
Explain arterial continuous mummer? Arterial Continuous Mummer : These originate in constricted arteries as in carotid or femoral artery obstruction (Mummer are louder in sys
Q. Why is the proximity between amino and ribosomes acids important for the protein formation? What is the enzyme that catalyzes that reaction? The proximity between amino and
Species Diversity Species diversity means the differences between species (both domesticate d and wild). It is the most visible component of biodiversity as implied by the word
Financial Accounting Software An Ideal Accounting Software should have the following features: Purchase Details Invoice Details Purchase/Sale Return (Debit/Cre
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