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Answer:
When a true-breeding black guinea pig is crossed to a white one, a) What fraction of the F1 offspring is expected to be heterozygous? answer: 100% ... 5) The absence of legs in mice has been attributed to a recessive allele. A normal.
Explanation:
Answer:
Explanation:
Most reptiles are carnivorous and they swallow the prey whole. The use teeth only to hold the prey. Poisonous snakes use fang for self-protection and killing the prey. Lizards that live here mostly eat small invertebrates, snakes eat tiny mammals.
Answer:
- The mRNA code for each type of amino acid is a sequence of <u>three</u> nucleotides, called a codon.
- mRNA codon that codes for the amino acid Phe es UUU.
Explanation:
The messenger RNA (mRNA) has in its structure sequences of 4 nucleotides adenine, uracil, guanine and cytosine. The possible combinations of these nucleotides to group into triplets is 64 codons to form 20 amino acids, from which it can be concluded:
- <em>An amino acid can be encoded by more than one codon.
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- <em>From these combinations the three STOP codons are obtained.
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A mRNA codon is a sequence of three nucleotides that serves to encode an amino acid.
Phenylalanine (Phe), according to the image, is formed with the UUU codon.
