Answer: Live R strain + Heat-killed S strain
Which of the following best describes the molecular structure of ovalbumin?
A group of six carbon atoms joined in a ring.
<u> A chain of amino acids folded and twisted into a molecule.
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A set of three fatty acids attached to a molecule of a glycerol.
A sequence of nitrogenous bases attached to a sugar phosphate backbone.
Answer:
genetic variation
Explanation:
Genetic variation refers to the difference in genetic content of organisms within a population. The genetic makeup of living organisms are made up of GENES, which exists in contrasting pairs called ALLELES. Each allele is responsible for variation in traits exhibited by the organisms. Differences in the allelic content of organisms of the same species leading to the display of varying phenotypic characteristics is referred to as GENETIC VARIATION.
This is the case in the example given in which four birds in a population possess a range of wing and feather colors i.e light brown feathers with darker wings, dark feathers with lighter wings, medium brown feathers with light wings, and medium brown feathers with very dark wings, all resulting from a variation in their genetic content. Hence, this is an example of GENETIC VARIATION.
Answer:
Habitat/Environment. Either can be right
