List I | List II | ||
---|---|---|---|
A | Two or more alternative forms of a gene | I | Back cross |
B | Cross of F1 progeny with homozygous recessive parent | II | Ploidy |
C | Cross of F progeny with any of the parents | III | Allele |
D | Number of chromosome sets in plant | IV | Test cross |
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): A typical unfertilized, angiosperm embryo sac at maturity is 8-nucleate and 7-celled.
Reason (R): The egg apparatus has 2 polar nuclei.
In the light of the above statements, choose the correct answer from the options given below: