I only have two questions, thank you!

One difference between a point mutation and a chromosomal mutation is that ____
A. A point mutation affects the DNA of more genes than a chromosomal mutation
B. A point mutation can involve a insertion or deletion, but cannot result in a frameshift.***
C. A chromosomal mutation can change the number of chromosomes in a cell.
D. A chromosomal mutation is more likely to be passed on to offspring or daughter cells.

A mutation that involves one or a few nucleotides is called ____.
A. A mutagen
B. An inversion
C. A point mutation***
D. A translocation

Thanks so much for your help! Happy Holidays! :)

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search it up

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Point mutation

You're welcome! Happy holidays to you too! Now let's go through each question and find the correct answers.

Question 1: One difference between a point mutation and a chromosomal mutation is that _____.

A point mutation refers to a mutation that occurs in a single nucleotide/base pair, whereas a chromosomal mutation involves changes in the structure or number of chromosomes.

Option A states that a point mutation affects the DNA of more genes than a chromosomal mutation. However, this is incorrect because chromosomal mutations can affect multiple genes due to their impact on the chromosomes.

Option B states that a point mutation can involve an insertion or deletion but cannot result in a frameshift. This is the correct answer because a point mutation can indeed involve the insertion or deletion of one or a few nucleotides, but it does not necessarily result in a frameshift mutation, which shifts the reading frame of the genetic code.

Option C states that a chromosomal mutation can change the number of chromosomes in a cell. This is also correct because chromosomal mutations can result in changes in the structure or number of chromosomes.

Option D states that a chromosomal mutation is more likely to be passed on to offspring or daughter cells. This is not specific to chromosomal mutations and can apply to both point and chromosomal mutations. Therefore, it is not a valid difference between the two.

So, the correct answer is B. A point mutation can involve an insertion or deletion but cannot result in a frameshift.

Question 2: A mutation that involves one or a few nucleotides is called ____.

Option A states that a mutagen is the correct term for a mutation involving one or a few nucleotides. However, this is incorrect. A mutagen refers to an agent or factor that can cause mutations, rather than the mutation itself.

Option B states that an inversion is the term for a mutation involving one or a few nucleotides. This is not correct because an inversion mutation involves the rearrangement of genetic material within a chromosome, not changes in a nucleotide sequence.

Option C correctly identifies the term for a mutation involving one or a few nucleotides as a point mutation.

Option D states that a translocation is the correct term, but this is inaccurate. A translocation mutation involves the movement of genetic material between non-homologous chromosomes.

Therefore, the correct answer is C. A point mutation is the term for a mutation involving one or a few nucleotides.

I hope this helps! Let me know if you have any other questions.