A true-breeding variety upon self-fertilization always produces:
Correct answer: D. Offspring identical to the parents
- A. Only dominant offspring
- B. Only recessive offspring
- C. Both with ratio 3:1
- D. Offspring identical to the parents
Explanation
The correct option is D) Offspring identical to the parents. True-breeding varieties are homozygous for a particular trait, meaning they carry two identical alleles for that trait. When self-fertilization occurs, the offspring will inherit the same alleles from the parents, resulting in offspring that are genetically identical to the parents.
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
The basic unit of biological information is:
A girl has blood group A and her brother has blood group B. Which combination of genotypes cannot belong to their parents:
The most prevalent abnormality of blood clotting factor is of:
Gene linkage is:
Which of the following trait is not X-linked?
In Drosophila male determining genes are located on: