Question

Give genotypes and phenotypes for progeny from the following crosses in the four 'o' clock plants with punnett square: A) white × white B). White × pink C) red × red D)Red × pink E)pink × pink F) red × white.

Answer 1

Answer:

in the case of four o clock plants they exhibit incomplete dominance, the dominant character is red coloured flower(RR) , intermediate is pink(Rr) and the recessive character is white(rr).

A) white×white i.e.rr×rr gives only white flowers(rr)

B)rr×Rr gives pink (Rr) and white flowers(rr) both genotype and phenotype ratios are 1:1

C)RR×RR gives only red flowers(RR)

D)RR×Rr gives pink and red flowers both genotype and phenotype ratios are 1:1

E)Rr×Rr gives red red,pink ,white flowers and both genotype and phenotype are 1:2:1

F)RR×rr gives all pink flowers (Rr)