Answer:
A nonsense mutation is a genetic mutation in a DNA sequence that results in a shorter, unfinished protein product. DNA is a chain of many smaller molecules called nucleotides. During protein formation, DNA (or RNA) nucleotide sequences are read three nucleotides at a time in units called codons, and each codon corresponds to a specific amino acid or stop signal (stop codon).
Explanation:
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The story of the Trojan War—the Bronze Age conflict between the kingdoms of Troy and Mycenaean Greece–straddles the history and mythology of ancient Greece and inspired the greatest writers of antiquity, from Homer, Herodotus and Sophocles to Virgil. Since the 19th-century rediscovery of the site of Troy in what is now western Turkey, archaeologists have uncovered increasing evidence of a kingdom that peaked and may have been destroyed around 1,180 B.C.—perhaps forming the basis for the tales recounted by Homer some 400 years later in the “Iliad” and the “Odyssey.”
The provided question lack the essential part which is required to answer the question, however the correct part is attached with with the question as image.
Answer:
From the provided punnett square it is clear that the genotype of parents are Rr for each. On this basis offspring which is maria that can be either RR, Rr, or rr. Maria have chances to get RR= 25%.
There can be no 100 surety of the phenotype of maria as there is 25% chances of rr and 75% of ability of tongue rolling.
to get Rr=50% and rr = 25%