In the experiment determining the parental genotype of plant seedlings from a monohybrid cross, if the dominant color was green (C) and the recessive color was white (c), what would the parental genotype have been if plate 1 only contained white seedlings instead of all green?
What will be an ideal response?
Ans:
Alleles -
C - Dominant and c - recessive.
Genotypes and phenotypes :-
CC (homozygous dominant) = Green seedlings.
Cc (Heterozygous) = Green seedlings.
cc (Homozygous recessive ) = White seedlings.
Now in question,
Plate 1 has only white seedlings (cc).
• It is only possible when parents have only recessive alleles or parents are in homozygous recessive condition.
So, genotype of parents = cc (homozygous recessive).
• If any parent has dominant allele in genotype and this allele will transferred to offsprings and offsprings will have dominant phenotype (green seedlings). This will unfollow conditions of question.
So,
Genotype of parents = cc.
Gametes = only 'c' type.
Genotype of offsprings = cc.
You might also like to view...
What is characteristic of adult frogs?
a. gills b. sucking air into their lungs c. countercurrent exchange d. pushing air into their lungs e. drawing water by inhalation across their gills
What are glycolipids
What will be an ideal response?
Your younger brother has cut himself with a rusty knife he found in the garden. The wound is not life threatening, but it is deep enough that it makes you concerned. You would ________
A) take him to an ER B) make an appointment with his primary health care provider C) take him to a DO D) make an appointment with his physician
How does azidothymidine (AZT) fight AIDS?
A) It blocks the virus from entering the cell. B) It targets the virus for destruction. C) It blocks the enzyme that converts viral RNA to DNA. D) It blocks the enzyme that assembles all of the parts into new viruses.