EASY
MAHE Manipal B.Sc Nursing 2025
ApplyAccorded Institution of Eminence by MoE, Govt. of India | NAAC A++ Grade | Ranked #4 India by NIRF 2024
Search Colleges, Exams, Schools & more
Test Cross MCQ - NEET Practice Questions with Answers
Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET
Quick Facts
-
Test Cross is considered one of the most asked concept.
-
17 Questions around this concept.
Solve by difficulty
The genotype of a plant showing the dominant phenotype can be determined by:
Test cross in plants or in Drosophila involves crossing
Match the terms in Column I with their description in Column II and choose the correct option:
| Column I |
Column II |
|
(a) Dominance |
(i) Many genes govern a single character |
| (b) Codominance |
(ii) In a heterozygous organism only one |
| (c) Pleiotropy |
(iii) In a heterozygous organism both alleles |
| (d) Polygenic inheritance |
(iv) A single gene influences |
Codes:
(a) (b) (c) (d)
NEET 2025: Biology: Mind Maps & Important Diagrams | Mock Test (Free)
NEET 2025: Syllabus | Most Scoring concepts | NEET PYQ's (2015-24)
New: Meet Careers360 experts in your city and get guidance on shortlisting colleges
New Programme: B.E. Environmental & Sustainability @ BITS Pilani for PCB Candidates
A cross in which an organism showing a dominant phenotype is crossed with the recessive parent to know its genotype is called :
Concepts Covered - 1
Test Cross
- From what we have learnt, it is clear that though the genotypic ratios can be calculated using mathematical probability, but simply looking at the phenotype of a dominant trait, it is not possible to know the genotypic composition.
- Therefore, a test cross is performed between phenotypically dominant plant (whose genotype is unknown) and a recessive plant (whose genotype is obviously homozygous recessive).
- Result:
- If the dominant-expressing organism is a homozygote, then all F1 offspring will be heterozygotes expressing the dominant trait.
- If the dominant expressing organism is a heterozygote, the F1 offspring will exhibit a 1:1 ratio of heterozygous and recessive homozygotes.
Study it with Videos
Test Cross"Stay in the loop. Receive exam news, study resources, and expert advice!"
Books
Reference Books
Clear your Basics with NCERT
E-books & Sample Papers
Get Answer to all your questions
NEET Articles
Mar 27, 2025
Student Community: Where Questions Find Answers
Back to top