When a pea plant heterozygous for violet flower colour is self crossed, then 450 offsprings having violet flower colour are obtained.
When a pea plant homozygous for violet flowers is crossed with a plant homozygous for White flower what will be the appearance of a cross of F1?
Answer: A true breeding homozygous pea plant with axial violet flowers when crossed with homozygous terminal white flower results in heterozygous axial violet flowers in F1 generation. Explanation: The heterogenous organisms when crossed one gets F2 generation in 9:3:3:1 ratio.
When a homozygous violet flowered plant is crossed with a white flowered one what percentage of the progeny will be violet?
This means 50% of the offspring will be Violet (heterozygous) and 50% would be white (homozygous).
How would you find out the genotype of a pea plant with violet flowers explain with the help of crosses?
Purple colour is a dominant phenotype in pea plants. To determine the genotype of the pea plant with purple flowers the students can use the process of Test cross. In test cross the pea plant whose genotype is to be determined is crossed with a homozygous recessive parent (pp) having white flowers.
Is violet flower dominant in pea plant?
Hint: In a pea plant, the violet flowers are dominant and white flowers are recessive and the axial position of the flower is dominant and the terminal position is the recessive position.
When a homozygous white flower is crossed with a heterozygous violet flower What fraction of the progeny will be white?
When a heterozygous purple flower (Rr) is crossed with a recessive white flower (rr), the progeny obtained are with the genotype (Rr), (Rr), (rr) and (rr). So, 50% of the progeny are with purple flowers (Rr) and 50% are with white flowers (rr).
What gametes will be produced by a true breeding pea plant with purple axial flowers genotype PPaa )?
This cross would be between a pure-breeding white axial (ppAA) and pure-breeding purple, terminal (PPaa) plant. The gametes that will be produced are pA and Pa, respectively. B. Thus, for the F1 generation, all are heterozygous, and all would be purple, axial (PpAa) plants.
When a heterozygous purple flowered plant is crossed with white flowered plant the progeny had the ratio?
50% purple, 50% white.
When heterozygous purple flower is crossed with recessive white flower then and flower will produce?
Heterozygous purple flower is crossed with recessive white flower. The progeny has the ratio: a) All purple.
How would you find genotype of a tall pea plants bearing violet flowers explain with the help of a cross name the type of cross you would use?
To know the genotype of the plant, a test cross is performed. In the test cross, pea plant showing the dominant phenotype is crossed with the pea plant that is homozygous recessive for the same trait. Results of the test cross are then interpreted to know the exact genotype of the given plant.
How will you find out the genotype of a pea plant which produces axial flowers explain?
(i) The phenotype of the F1 generation in plants with axial flowers will be produced. The genotype of F1 generation plants is Aa. (iii) From the above cross, 3 plants with axial flowers (Aa) and 1 plant with terminal flower (aa) is produced. So phenotypic ratio is 3 : 1.
What is the name of type of cross to find out the genotype of purple flowered plant?
The genotype of a pea plant bearing violet flowers is test cross.
What trait in pea plants is being crossed?
Terms in this set (6)
What trait in pea plants is being studied in the cross shown above? The trait that is being studied is the height of the pea plants.
What are the heterozygous genotypes?
An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype. In our example, this genotype is written Bb. Finally, the genotype of an organism with two recessive alleles is called homozygous recessive. In the eye color example, this genotype is written bb.
Why would a pea plant that is heterozygous?
Mendel’s parental pea plants always bred true because both produced gametes carried the same allele. When P plants with contrasting traits were cross-fertilized, all of the offspring were heterozygous for the contrasting trait, meaning their genotype had different alleles for the gene being examined.