The type of mutation described is a substitution mutation. This occurs when one base pair in the DNA sequence is replaced by another, leading to a change in the corresponding amino acid during translation.
When a DNA sequence is being replicated, a cytosine base is replaced by a thymine base. This results in one wrong amino acid being attached to a protein during translation. What type of mutation is described? (1 point) Responses Insertion Insertion Inversion Inversion Substitution Substitution Deletion
11 answers
Which statement describes the first step of protein synthesis? (1 point) Responses tRNA attaches amino acids to the mRNA strand. tRNA attaches amino acids to the mRNA strand. DNA unwinds between the base pairs. DNA unwinds between the base pairs. Amino acids are linked together with peptide bonds. Amino acids are linked together with peptide bonds. A ribosome attaches to the mRNA.
The statement that describes the first step of protein synthesis is: DNA unwinds between the base pairs.
In protein synthesis, the first step is transcription, where the DNA unwinds and messenger RNA (mRNA) is synthesized using one strand of the DNA as a template.
Which statement is true? (1 point) Responses Amino acids do not need to be assembled in a particular order. Amino acids do not need to be assembled in a particular order. tRNA is attached to specific proteins in the cell’s cytoplasm. tRNA is attached to specific proteins in the cell’s cytoplasm. The human body uses 20 amino acids to form all types of proteins. The human body uses 20 amino acids to form all types of proteins. Amino acids form a polypeptide chain via carbon-carbon bonds.
The true statement is: The human body uses 20 amino acids to form all types of proteins.
These 20 amino acids are the building blocks of proteins, and they can be combined in various sequences to form different proteins, each with its own specific structure and function.
Cystic fibrosis is an inherited disorder that is caused when three bases are accidentally removed from the CFTR gene. Which of the following is true about cystic fibrosis? (1 point) Responses The affects of cystic fibrosis only impact women. The affects of cystic fibrosis only impact women. Cystic fibrosis is caused by a deletion mutation. Cystic fibrosis is caused by a deletion mutation. It is not known why cystic fibrosis happens in people. It is not known why cystic fibrosis happens in people. Cystic fibrosis is a silent disorder, it has no symptoms.
The true statement about cystic fibrosis is: Cystic fibrosis is caused by a deletion mutation.
Cystic fibrosis is often caused by the deletion of three nucleotides in the CFTR gene, leading to the loss of a single amino acid (phenylalanine) in the protein product, which results in the symptoms associated with the disorder.
What benefit does using the CRISPR technique have in creating GMOs?(1 point) Responses CRISPR can result in infertile hybrids. CRISPR can result in infertile hybrids. It eliminates all risk of mutation. It eliminates all risk of mutation. Diversity within species can continue to increase through crossbreeding. Diversity within species can continue to increase through crossbreeding. Precise traits can be chosen to produce viable organisms more quickly.
The benefit of using the CRISPR technique in creating GMOs is: Precise traits can be chosen to produce viable organisms more quickly.
CRISPR allows for targeted editing of specific genes, enabling scientists to enhance or introduce desirable traits in organisms more efficiently compared to traditional genetic modification methods.
In a certain mouse population, gene B codes for black fur, and b codes for brown fur. This gene follows the Mendelian inheritance pattern - the trait is only determined by one gene. What is the phenotype of a mouse that has the genotype Bb? (1 point) Responses black fur black fur yellow fur yellow fur both black and brown fur both black and brown fur brown fur
The phenotype of a mouse that has the genotype Bb is black fur.
In this case, the allele for black fur (B) is dominant over the allele for brown fur (b), so the presence of one dominant allele (B) will result in the black fur phenotype.