Aparticular triplet of bases in the template strand of dna is 5 agt 3. the corresponding codon for the mrna transcribed . 3 uca 5.b. 3 uga 5.c. 5 tca 3.d. 3 acu 5. 21.

The correct answer is A. 3 UCA 5

Explanation:

The process of making mRNA from the template strand of DNA is known as transcription. The template strand is also called the antisense strand. In mRNA RNA polymerase read the sequence of code present on template strand of DNA and add opposite base pair in the mRNA chain.

In mRNA Thymine is replaced by Uracil therefore if there is Adenine nucleotide present in template strand then in mRNA Uracil will be added against it. The rest of the nucleotide addition is the same as in DNA i.e, T will be added corresponding to A and C will be added corresponding with G.

So here the template strand has sequence 5 AGT 3 therefore in the mRNA the corresponding codon would be 3 UCA 5.

the answer would be 2, if crossing over doesn’t occur 2 out of 4 of the daughter cells will have that allele.

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the oldest known insects are believed to live around 400 millions ago as suggested by the fossil records.   some plants having woody stems also evolved during this time.

after the evolution of insects the first four legged species or the tetrapods evolved in shallow freshwater habitats from the intermediate species approximately 397 million years ago. the tetrapods went on conquering the land giving rise to amphibians, reptiles, mammals and birds.

the major split in tetrapods first occurred 340 million years ago branching off from amphibians.

363 million years ago when the carboniferous period began the insects started roaming on land and taking flights, following which the four limbed tetrapods adapted in the terrestrial habitat.