In maize (corn) plants, a dominant allele I inhibits
kernel
color, while the recessive allele i permits color when
homozygous.
At a different locus, the dominant allele P causes purple
kernel color, while the homozygous recessive genotype pp
causes red kernels. If plants heterozygous at both loci are
crossed, what will be the phenotypic ratio of the offspring?
ANS:The ratio of the phenotype of the offspring of the second filial generation has been given in the image below.

In maize (corn) plants, a dominant allele I inhibits kernel color, while the recessive allele i...
Question 12 only.
Punnett's square analysis for the parental cross r Rr Rr 9) If we used the above offspring (F1) in a new cross, what would be the genotypes and phenotypes of the offspring of the Fz generation? 10) What is the genotypic ratio of the F2 generation? 11) What is the phenotypic ratio of the F2 generation? 12) What would be the genotypic and phenotypic ratios of offspring from a cross between a homozygous recessive parent (r r)...
Narrative essay
1. In corn, purple kernels are dominant to yellow kernels, and starchy kernels are dominant to sweet kernels. If the genotypic verent crosed with a yellow, sweet parent? What would be the phenotypic ratio of the Fa complete dominance is the pattern of inheritance, what would be and phenotypic ratios for the offspring of a true breeding purple, starchy generation? 2. In guinea pigs, a cross between black furred and brown furred parents gives offspring with 100% black...
2. (4pts) In a strain of Petunia that normally have purple flowers, recessive and dominant mutations at the red color locus (R locus : R+ = wildtype allele, purple) lead to different flower colors. Plants that carry a particular dominant allele Ra have pink petals. Of the individuals that carry one allele of the dominant allele Rb roughly 20% have normally colored purple petals, the remaining 80% show a range of lighter red colors. Individuals that are homozygous for Rb...
1. What kind of assortment does the F2 generation exhibit? Which of Mendel’s laws does it support? 2. What are the genotypes of both of the first parent plants? 3. Why do the F1 generation plants only contain tall plants with red flowers? Why are there no short plants or white flowers? 4. According to the activity, what is the genotype for the F1 Generation? What is their phenotype? 5. From the Punnett Square, what is the ratio of short-white...
The tralt for purple flowers in pea plants is dominant to the trait for white flowers (pl. FIGURE 18: Heterozygous Homozygous Recessive Cross P pp pPp pp 6. What is the probability that the heterozygous parent will donate a recessive p allele? 7. What is the probability that the homozygous-recessive parent will donate a recessive paliele? 8. What is the probability of both parents donating a recessive p allele? 9. Why is the known genotype in a testcross always homozygous...
The recessive gene sh produces shrunken endosperm in corn kernels and its dominant allele sh+ produces full, plump kernels. The recessive gene c produces colorful endosperm and its dominant allele c+ produces colored endosperm. Two homozygous plants are crossed, producing and F1 all phenotypically plump and colored. The F1 plants are testcrossed and the following offspring were produced: 149 shrunken, colored, 4035 shrunken, colorless, 152 plump, colorless and 4032 plump, colored. a. What were the phenotypes and genotypes of the...
In guinea pigs, the allele for short hair is dominant over long hair. If a heterozygous short hair guinea pig is crossed with another heterozygous short hair guinea pig, what is the probability of an offspring having long hair? In pea plants purple flower allele is dominant to white flower alleles. If a homozygous purple flower plant is crossed with a white flower plant, what percent of their offspring would you expect to be purple? Straight fur (S) is dominant...
part B
2. (4pts) In a strain of Petunia that normally have purple flowers, recessive and dominant mutations at the red color locus (R locus : R+ = wildtype allele, purple) lead to different flower colors. Plants that carry a particular dominant allele Ra have pink petals. Of the individuals that carry one allele of the dominant allele Rb roughly 20% have normally colored purple petals, the remaining 80% show a range of lighter red colors. Individuals that are homozygous...
Concerning the four corn genes below
a) For the following corn genotypes, indicate the expected
kernel colors.
1) Cc Rr pp yy
2) CC rr PP yy
3) Cc Rr Pp YY
4) CIc Rr Pp yy
5) CIC Rr pp Yy
b) From the following corn crosses, list all of the expected
genotypes, corresponding phenotypes, and the ratios (phenotypic and
genotypic) that you would expect among the progeny. List only the
genes that are segregating, not the genes that...
12. In snapdragons, the allele for tall plants is dominant to the allele for dwarf plants , and t he allele for red flowers is codominant with the allele for white flowers . The heterozygous condition for flower color is pink. Question – If a dwarf red snapdragon is crossed with a white snapdragon homozygous for tall, what are the probable genotypes and phenotypes of the F1 generation? a. tall and pink b. tall and red c. tall and white...