Locus of a gene on a chromosome means its:
Correct answer: A. Position
- A. Position
- B. Function
- C. Start point
- D. End point
Explanation
The locus of a gene on a chromosome refers to its specific location or position on the chromosome. It is the precise point on the chromosome where the gene is situated, and it is usually described by its chromosomal coordinates (e.g., 3q21, meaning the gene is located on the long arm of chromosome 3, at position 21).
This question appeared on the KMU MDCAT 2023 (retake) paper, which you can sit online with every answer explained.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Gene Linkage and Crossing Over
Linked genes lie on the same chromosome and tend to pass together, unlike genes that assort independently on different chromosomes. The topic connects linkage with homologous pairing, crossing over during prophase I of meiosis, recombinant and parental offspring, and recombination frequency as an estimate of gene distance.
Practise Inheritance
1,238 free Inheritance MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Gene Linkage and Crossing Over questions
The chance of a cross-over between two loci is directly proportional to their:
Crossing over brings:
Which of the following reduces the chance of recombination and variation?
What is the name of the process by which genetic material is shuffled during meiosis, increasing genetic variation?
The phase of meiosis during which the non-sister chromatids of homologous chromosomes may exchange their segments:
Synaptonemal complex helps in: