The building blocks of proteins are _____. nucleic acids amino acids sugars fats
2 answers:
Answer: Amino acids are the building blocks of proteins.
There are 20 standard amino acids which make up the human and other mammalian proteins. In a protein molecule, amino acids are held together by peptide bond which is formed between -COOH (carboxylic group) of one amino acid and (amino group) of another amino acid.
They can be broadly divided as-
1) Charged amino acids
- Lysine (K)
- Arginine (R)
- Aspartic acid (D)
- Glutamic acid (E)
2) Hydrophobic amino acids
- Glycine (G)
- Alanine (A)
- Proline (P)
- Leucine (L)
- Isoleucine (I)
- Methionine (M)
- Phenylalanine (F)
- Valine (V)
3) Polar amino acids
- Glutamine (Q)
- Histidine (H)
- Asparagine (N)
- Serine (S)
- Threonine (T)
- Cysteine (C)
- Tyrosine (Y)
- Tryptophan (W)
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(1) All the genotypes are as follows: AABB, AaBB, AABb, AaBb, aaBB, aaBb, AAbb, Aabb, aabb.
(2) Assuming that Aa is dominant and Bb is recessive, there will be 9 phenotypes with both A and B allele dominant (i.e. AaBb, AABb); there will be 3 phenotypes with just the A allele dominant (i.e. Aabb, AAbb); there will be 3 phenotypes with just the B allele dominant (i.e. aaBb, aaBB); and there will be 1 phenotype with both alleles recessive (i.e. aabb). The phenotypic ratio in this case is 9:3:3:1.
(3) The probability of producing an offspring with the aabb genotype is 1/16 or 6%.
(2) Assuming that Aa is dominant and Bb is recessive, there will be 9 phenotypes with both A and B allele dominant (i.e. AaBb, AABb); there will be 3 phenotypes with just the A allele dominant (i.e. Aabb, AAbb); there will be 3 phenotypes with just the B allele dominant (i.e. aaBb, aaBB); and there will be 1 phenotype with both alleles recessive (i.e. aabb). The phenotypic ratio in this case is 9:3:3:1.
(3) The probability of producing an offspring with the aabb genotype is 1/16 or 6%.