Multiple Choice
Which of the following statements best describes the inheritance of sex-linked genes in humans?
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2. Mendel's Laws of Inheritance
Sex-Linked Genes
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Which statement accurately describes the Notch mutation in Drosophila?
A
It is a deletion on the X chromosome.
B
It is a point mutation on chromosome 2.
C
It is a duplication on the Y chromosome.
D
It is an insertion on chromosome 3.
Verified step by step guidance1
Understand the genetic context of the Notch mutation in Drosophila, which is a well-studied gene involved in developmental processes.
Recall that the Notch gene is located on the X chromosome in Drosophila melanogaster, which is important for determining the type of mutation.
Review the types of mutations: deletion (loss of a DNA segment), point mutation (single nucleotide change), duplication (extra copy of a DNA segment), and insertion (addition of DNA sequence).
Match the mutation type with the chromosome location: since Notch is on the X chromosome, mutations described on other chromosomes (2, 3, or Y) are unlikely to be correct.
Conclude that the accurate description of the Notch mutation is that it is a deletion on the X chromosome, based on its known genetic location and mutation type.
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