Among the developing Ceratopteris gametophytes, what proportion of these do you expect to have Polka-Dot mutation? Among the developing Ceratopteris gametophytes, what proportion of these do you expect to have Polka-Dot mutation? Solution ANS: C-Fern(Ceratopteris): The abbreviated name C- fern comes from Ceratopteris richardii. C-ferns are belongs to a hybrid species that most predominantly found in Cuba and Nicaragua. In this ferns the DNA strain cause short life cycle. During its life cycle DNA strains from one fern to other introduced by cross breading. C-ferns can exhibit both haploid and diploid phases. Polka-Dot mutation: The polka dot characteristic is a mutation that was induced using an EMS mutagen. In this mutation, the chloroplasts of ferns are clumped together and creates polka dot look so it is called as Polka-Dot mutation. Matured polka dot C-ferns is appeared as paler when compared with wild type C-ferns. But the growth and reproduction is same. Wild Type Polka Dot: It is a hypothesis expected that, due to the polka dot traits are believed to be recessive. Crossing between the two mutant forms of polka dot C-fern plants will capable to produce only polka dot offspring. If first produced Polka dot C- ferns spores are subjected to an EMS mutagen. EMS can causes many mutations in C ferns, not only polka dots. Some other mutations are pale, lethal, dwarf, ruffled, and bubbles. The plates were sown and the gametophytes were searched through only to find that not enough polka dot C- ferns had been produced to continue the experiment and acquire accurate results..

1. Among the developing Ceratopteris gametophytes, what proportion of these do you expect to
have Polka-Dot mutation?
Among the developing Ceratopteris gametophytes, what proportion of these do you expect to
have Polka-Dot mutation?
Solution
ANS:
C-Fern(Ceratopteris):
The abbreviated name C- fern comes from Ceratopteris richardii. C-ferns are belongs to a hybrid
species that most predominantly found in Cuba and Nicaragua. In this ferns the DNA strain
cause short life cycle. During its life cycle DNA strains from one fern to other introduced by
cross breading. C-ferns can exhibit both haploid and diploid phases.
Polka-Dot mutation:
The polka dot characteristic is a mutation that was induced using an EMS mutagen.
In this mutation, the chloroplasts of ferns are clumped together and creates polka dot look so it is
called as Polka-Dot mutation.
Matured polka dot C-ferns is appeared as paler when compared with wild type C-ferns. But the
growth and reproduction is same.
Wild Type Polka Dot: It is a hypothesis expected that, due to the polka dot traits are believed to
be recessive. Crossing between the two mutant forms of polka dot C-fern plants will capable to
produce only polka dot offspring.
If first produced Polka dot C- ferns spores are subjected to an EMS mutagen. EMS can causes
many mutations in C ferns, not only polka dots.
Some other mutations are pale, lethal, dwarf, ruffled, and bubbles.
The plates were sown and the gametophytes were searched through only to find that not enough
polka dot C- ferns had been produced to continue the experiment and acquire accurate results.