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Gene Mutations

Last updated about 1 year ago
18 questions
1

The type of mutation where a base is switched for another base is known as _________________.

1

The type of mutation where a base is added/inserted is known as _________________.

1

The type of mutation where a base is lost/deleted is know as a ______________.

1

Identify the type of mutation below.
Original Sequence - T A C A C C T T G G C G A C G A C T
Mutated Sequence - T A C A T C T T G G C G A C G A C T

1

Identify the type of mutation below.
Original Sequence - T A C A C C T T G G C G A C G A C T
Mutated Sequence - T A C G A C C T T G G C G A C G A C T

1

Identify the type of mutation below.
Original Sequence - T A C A C C T T G G C G A C G A C T
Mutated Sequence - T A C A C C T T A G C G A C G A C T

1

Identify the type of mutation below.
Original Sequence - T A C A C C T T G G C G A C G A C T
Mutated Sequence - T A C A C C T T G G C G A C T A C T

1

Identify the type of mutation below.
Original Sequence - T A C A C C T T G G C G A C G A C T
Mutated Sequence - T A C A C C T T G G G A C G A C T

1

Identify the type of mutation below.
Original Sequence - T A C A C C T T G G C G A C G A C T
Mutated Sequence - T A C A C C T T G G C G A C G A C T

1

Use the original strand of DNA provided to create a mutated strand (with a substitution) in the underlined area.
T A C T G A G G A C A C G T G

1

Use the original strand of DNA provided to create a mutated strand (with a deletion) in the underlined area.
T A C A C T G A G G A C A C G T G A

1

Use the original strand of DNA provided to create a mutated strand (with an insertion) in the underlined area.
T A C A C T G A G G A C A C G T G A

1

Use the RNA Codon Chart to identify the effects of the mutation below.
Original: T A C A C T G A G G A C A C G T G A
Mutated: A U U G A C U C C U G U G C A C U

1

Use the RNA Codon Chart to identify the effects of the mutation below.
Original: T A C A C T G A G G A C A C G T G A
Mutated: A U G U A A C U C C U G U G C A C U

A gene mutation refers to a change in the building blocks (nucleotides) that specify the sequence of a gene. A gene mutation can enhance, impair, or completely block a gene's activity.
1

According to reading above, mutations occur when _______________ change from the original sequence.

1

Select all that apply.

Gene mutations can.......... a gene's activity.

Genes represent the basic unit of heredity that allows a species to pass its information from one generation to the next. The human gene pool is the set of all genes carried within the human population. Genetic changes (including mutations) can be beneficial, neutral, or bad. Beneficial mutations are less common and result in a selective survival advantage for a particular gene, cell, or whole organism. Beneficial mutations can become integrated into the human gene pool, particularly when it allows an organism to live longer or to reproduce. Neutral gene mutations usually involve point mutations that do not change the amino acid sequence or affect transcription/translation. Deleterious mutations are gene mutations leading to alterations in gene expression or protein function that, for example, results in human disease or is fatal. Recombination, or the crossing over and exchange of information between chromosomes during meiosis, can lead to gene rearrangements if the chromosomes are paired inappropriately.
1

Which type of mutation does not affect the amino acid sequence?

1

Which type of mutation leads to human disease or death?

Natural selection is based upon the differences in the viability and reproductive success of different genotypes with a population (differential reproductive success). If a gene mutation results in the ability of an organism to live longer by protecting it from environmental threats or allowing it to become more reproducible, then this mutation will have a survival advantage.