Responses
Mutations affect the way DNA is created through transcription.
Mutations affect the way DNA is created through transcription.
Mutations are not inheritable from gametes because they are given from each parent.
Mutations are not inheritable from gametes because they are given from each parent.
Mutations can only happen during meiosis because genes are inherited.
Mutations can only happen during meiosis because genes are inherited.
Mutations affect protein synthesis which impacts the way traits are expressed
9 answers
The evidence that best supports the claim that mutations are a source of inheritable genetic variation is:
Mutations affect protein synthesis which impacts the way traits are expressed.
This response highlights how mutations can lead to changes in the proteins produced by an organism, which in turn can influence the organism's traits. If these mutations occur in the germ cells (gametes), they can be passed down to the next generation, contributing to genetic variation.
To determine the type of mutation that has caused a specific disorder, more context about the nature of the disorder and the specific change in the genetic sequence is needed. However, here’s a brief explanation of each type of mutation that may help you choose the correct answer based on what you know:
Substitution: This occurs when one base pair is replaced by another. This can result in a different amino acid being incorporated into a protein, potentially impacting its function.
Insertion: This involves adding one or more nucleotide base pairs into the DNA sequence, which can lead to a longer sequence and potentially change the protein produced.
Deletion: This is when one or more nucleotide base pairs are removed from the DNA sequence. This can also affect the resulting protein and function.
Frameshift: This type of mutation results from either an insertion or deletion that is not in multiples of three nucleotides, which shifts the reading frame of the genetic code. This typically changes all subsequent amino acids and often leads to a nonfunctional protein.
If you can provide more details about the disorder or the genetic change involved, I can help you identify which type of mutation is responsible!
The mutation that occurred between the original strand and the new strand of DNA is a substitution.
In the original strand, the sequence includes "CCC," which is changed to "ACC" in the new strand. This indicates that one base pair (the first "C") has been replaced by another base pair (the "A"). Since only one nucleotide was changed and there is no addition or deletion of nucleotides that shifts the reading frame, it classifies as a substitution mutation.
The type of environmental factor that caused this mutation to be inherited is food availability.
In the scenario described, the longer neck provided a feeding advantage, allowing the long-necked giraffe to access food that other giraffes could not reach. This environmental pressure (the availability of food higher up in trees) likely selected for the trait of a longer neck, promoting its inheritance over generations in the giraffe population.
One way that a frameshift mutation could occur is when two nucleotides are deleted.
Frameshift mutations occur when the number of nucleotides inserted or deleted is not a multiple of three. This disrupts the reading frame of the genetic code, causing all subsequent codons to be misread. In this case, deleting two nucleotides would shift the reading frame and result in a frameshift mutation.
In contrast, deleting or inserting three nucleotides would typically result in the loss or addition of one whole codon, but the reading frame would remain intact.
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