In snapdragons tallness (T) is dominant to dwarfness (t).
Red flowers are produced by RR and white flowers by rr but
the heterozygous Rr is pink. A dwarf red snapdragon is
crossed to a homozygous tall plant with white flowers. What
is the phenotypic ratio of the F1? the F2?
Answer / sowjanya
dwarf, red snapdragon: ttRR * homozygous tall,white flowers
TTrr
F1: tR, Tr gametes
phenotypic ratio : 1:2:1
F2: TR, Tr, tR, tr gametes
9:3:3:1 .
| Is This Answer Correct ? | 1 Yes | 1 No |
what is Sickle Cell Anemia ?
A normally pigmented man (dominant) marries an albino woman (recessive). They have 3 children, one of whom is an albino. What is the genotype of the man?
What are the benefits/risks when company traditional and genetically engineered breeding?
what is the difference between test cross and back cross?
What ethical dilemmas should be considered when genetic engineering is put into practice?
Among the population size of 500, 50 of 150 heterozygous individuals showing polydoctily. Then what is the penetrance of that population
A certain man has the genotype AaBb; genes A and B are on one chromosome and a and b are on its homologue. List the gametes that could be formed with crossing over and with no crossing over
Explain steps involved in transcription?
what are Stem Cells ?
differentiate Mitosis and Meiosis ?
What is inbreeding ?
The ABO blood system has been employed to settle cases of disputed paternity. Suppose, as an expert in genetics, you are called to testify in a case where the mother is type A, the child is type O and the alleged father is type B. How would you respond to the following statements of the attornies: a. "Since the mother has type A, the type O of the child must have come from the father and since my client is type B, he obviously could not have fatered the child." Made by the attorney of the alleged father. b. "Further tests revealed that this man is heterozygous and therefore he must be the father." Made by the mother's attorney.