The action is Fixed Action Pattern. It is a highly typecasted sequence of behaviors that, once begun, is usually carried to completion. It is triggered by a sign stimulus. The egg outside the nest is the stimulus.b <span>It is performed virtually the same by all regardless of environmental conditions. </span> Even if the egg is removed or slips away, she completes the behavior by returning an "imaginary" egg to the nest.
Ans.
Protein synthesis involves formation of proteins, during which information present in DNA is used to make polypeptide chains. Hence, amino acid sequence of a polypeptide chain is determined by the sequence that may differ in different species having proteins with same amino acid sequence.
Thus, the molecules that are used to compare different species with proteins having exact same amino acid sequences are DNA molecules.
Protein synthesis includes two steps, transcription and translation. During transcription, DNA gets converted into RNA by RNA polymerase enzyme, while during translation, RNA provides information to make proteins.
In RNA information is present as triplets of nucleotides, known as codon. Each code codes for a specific amino acid. There are a total of 64 codons, while number of protein-forming amino acids is 20. Hence, one amino acid can be coded by more than one codon and this property of codons is known as degeneracy of codons.
Thus, two species may have the same protein even if their DNA molecules are different because of degeneracy of codons.
Frogs will start devouring fish if there are too many of them in the pond and not enough food sources for them.
<h3>
What is pond ecosystem?</h3>
A freshwater ecosystem called a pond is made up of groups of species that depend on one another and the surrounding water environment for nutrients and survival.
Garden can take on a new dimension with the addition of a pond or a container planted with aquatic plants like water lilies. Additionally, it might give your property a completely new depth by bringing in a variety of creatures, especially frogs.
For more information regarding pond ecosystem, visit:
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Answer:
A
Explanation:
Less pollution means less greenhouse gasses being emitted.
