The number of linkage groups in humans is?
Correct answer: B. 23
- A. 1/21
- B. 23
- C. 1/23
- D. 1/24
Explanation
Option B is correct since the number of linkage groups in humans is equal to the haploid number of chromosomes. The linkage groups refer to all the genes on a single chromosome. These groups are inherited together in an individual. The chromosomes in humans are 46 and their haploid number is 23. So linkage groups are also 23. Option A is incorrect since it states 1/21 which is wrong. Option C is incorrect since it states 1/23 which is wrong. Option D is incorrect since it states 1/24 which is wrong.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Inheritance
Mendel's laws explain segregation, independent assortment and the prediction of genetic ratios using alleles, genotypes and phenotypes. The chapter also covers linked genes, recombination and crossing over during meiosis, then applies pedigree reasoning to X-linked recessive traits, which show different inheritance patterns in males and females.
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 Inheritance questions
A researcher is studying a population of insects and notices that 60% have red eyes, 30% have apricot eyes, 5% have white eyes and 5% have pink eyes. Which of these eye colors would be designated the wild type?
The alternative forms of the same gene are called which of the following?
A man with type A- blood and a woman with type AB+ blood have a child. Which blood type is impossible for that child to have?
Gene is the molecular unit of the following:
In mammals, which type of phenotypic expression will show recessive traits more frequently in males than females?
Two pea plants are crossed. One plant is homozygous dominant for purple flowers, and the other is homozygous recessive for white flowers. What fraction of the F2 population will have white flowers?