A test cross distinguishes between:
Correct answer: D. A homozygous dominant and heterozygous form
- A. 2 homozygous forms
- B. Homozygous recessive and heterozygous form
- C. 2 heterozygous forms
- D. A homozygous dominant and heterozygous form
Explanation
It is a mating in which an individual showing a dominant phenotype is crossed with an individual showing its recessive phenotype. This cross finds out the homozygous or heterozygous nature of the genotype
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
All altered alternative forms of a gene, whose number is more than two are called:
Which one might be the blood group of an individual with the following genetic makeup, "LMLN, ii, Dd, hh"?
Keeping in view Mendel's law of Segregation, if tall plants were crossed with short heighted plants, then which of the following best describes the F1 Progeny?
The most prevalent abnormality of blood clotting factor is of:
A girl has blood group A and her brother has blood group B. Which combination of genotypes cannot belong to their parents:
The basic unit of biological information is: