Download App

STD 12 - 4. principal of inheritance and variation — Biology STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceBiologySTD 12 - 4. principal of inheritance and variation1 Mark
MCQ
Alleles are
  • ✓
    different molecular forms of a gene
  • B
    heterozygotes
  • C
    different phenotype
  • D
    true breeding homozygotes.
✓

Answer

Correct option: A.
different molecular forms of a gene
a
(a): Genes are the units of inheritance and contain the information that is required to express a particular trait in an organism. Alternating forms of a single gene which code for a pair of contrasting traits are known as alleles. For example, two alleles determine the height of pea plant (tall and dwarf).

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from STD 12 - 4. principal of inheritance and variation→STD 12 - 4. principal of inheritance and variation — all question types→Biology STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

Which one of the following options gives one correct example each of convergent evolution and divergent evolution?
→
Sewage purification is done by:
→
False statement about $ZIF T$ is
→
Detritus food chain starts from
→
Gonads develop from embryonic.
→
The crops engineered for glyphosate are re$-$ sistant$/$ tolerant to:
→
Find the odd one w.r.t. distilled alcoholic beverages
→
In the equation GPP $- R = NPP$ (GPP is Gross Primary Productivity)(NPP is Net Primary Productivity)$R$ here is
→
Find out the natural contraception methods $I$. Implantation $II$. Lactational (amenorrhoea) $III$. Condoms $IV$. Vasectomy $V$. Tubectomy $VI$. Sterilisation
→
In the textbook you came across Three Mile Island and Chernobyl disasters associated with accidental leakage of radioactive wastes. In India we had Bhopal gas tragedy. It is associated with which of the following?
→