Monohybrid cross :
Parent gametes : P1P1 (pink) x P2P2 (Blue)
Gametes | Blue : P2 | P2 |
Pink : P1 | P1P2 | P1P2 |
P1 | P1P2 | P1P2 |
As mentioned in the question that neither P1 nor P2 are dominant. Hence different phenotype is observed for the heterozygous alleles (P1P2) i.e. purple flowers.
So, all the possible phenotypes of the offspring are purple.
In petunias, the alleles for flower color are P1 - pink and P2 - blue. Neither...
in petunias, the alleles for flower color are P1 - pink and P2 - blue. Neither ailele is dominant. Heterozygotes (P1P2) for these alleles have purple flowers. If two purple flowers were crossed, what proportion of the offspring would be pink? A all - 1/4 C. none D. 3/4
s o In petunias, the alleles for flower colorare P1 pink and P2 . Neither les dominant Heteronotes P1P for these shove purple were 100 pe unknown parentage were found and planted. 50 of the offspring had blue flowers and so had purple flowers. What were the genotypes of both parents A P2P2 x P2P2 B. P1P2 x P2P2 C.P1P1 x P2P2 D.P1P1 x P1P2 EP1P1 x P1P1
II. MONOHYBRID PROBLEMS WITH INCOMPLETE DOMINANCE 8. Petunia flower color is governed by two alleles, but neither allele is truly dominant over the other. Petunias with the genotype R R are red-flowered, those that are heterozygous (R W ) are pink, while those with the (WW ) genotype have white flowers. This is an example of incomplete dominance. a. If a white-flowered plant is crossed with a red-flowered plant, what is the genotypic ratio of the F1? __________________________________________________________ b. What...
In the Japanese morning glory, purple flower color may be caused by dominant alleles at either one of two separate gene pairs, A_bb or aaB_. When dominant alleles are present at both gene pairs (A_B_), the flower color is blue, and when both are homozygous recessive (aabb), the color is scarlet. A blue F1 was therefore produced by crossing two different purple types AAbb x aaBB. A. What phenotypes in what proportion would you expect from crossing this F1 to...
0. In snapdragons, the alleles for flower color show incomplete dominance. CRCR produces red flowers; CWCW produces white flowers and CRCW produces pink flowers. The height of the plant is determined by a separate gene with regular dominant and recessive alleles. Normal height (D) is dominant over dwarf height (d). a. A snapdragon that is heterozygous normal in height and has white flowers is crossed with a plant that is dwarf in height and has red flowers. What is the...
In sweet peas, two genes (genes A and B) control flower color. The dominant alleles of both genes produce enzymes that function in the biochemical pathway shown to convert colorless precursors to a purple pigment. The recessive alleles do not produce enzyme. Therefore, at least one dominant allele of both gene A and gene B are required for purple flowers. Answer the questions about this biochemical pathway. ΑΑ, Αα BB, Bb Enzyme A Enzyme B Colorless precursor 1 Colorless precursor...
2. A Pea plant that is Homozygous Dominant for purple flower color and Heterozygous for dark green leaves is crossed with another pea plant that is Heterozygous for both purple flower color and dark green leaves Let R = Purple flower color and r = white flower color Let D = Dark Green leaves and d = light green leaves Data Collection/Selection Using the information above, write the parent genotypes and gametes. Not all blanks may be used. Parent Genotypes:...
Punnet squares and butterflies? In one species of butterfly, there are alleles for red color and blue color, but neither of these alleles is dominant over the other. When a butterfly of this species has both of these alleles, its color is purple In some breeds of cows, there are alleles for brown color and white color. Neither of these alleles is dominant over the other. When a cow of one of these breeds has both of these alleles, its...
1. In one experiment, Mendel crossed a pea plant that bred true for axial flowers with a pea plant that bred true for terminal flowers. All the F1 plants had axial flowers. Which is the recessive trait? Explain your answer. 2. Green pod color is a dominant allele in pea plants (G). If two plants with green pods are crossed, some of the offspring have yellow pods. What are the possible genotypes of the parents? 3. In garden peas, one...
15. The gene for petal color in a flower has incomplete dominance, so that individuals with two Al alleles (AIA) are red, individuals with two A2 alleles (A2A2) are white, and individuals with one of each allele (AIA2) are pink. In a cross between a red flower and a white flower, what is the probability of getting a pink offspring? (2 points) In a cross between a red flower and a pink flower, what is the probability of getting a...