मराठी

In pea plants, yellow seeds are dominant to green. If a heterozygous yellow seed pant is crossed with a green seeded plant,

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प्रश्न

In pea plants, yellow seeds are dominant to green. If a heterozygous yellow seed pant is crossed with a green seeded plant, what ratio of yellow and green seeded plants would you expect in the F1 generation?

पर्याय

  • 9:1

  • 1:3

  • 3:1

  • 50:50

MCQ
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उत्तर

50:50

shaalaa.com
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पाठ 2: Classical Genetics - Evaluation [पृष्ठ ५२]

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संबंधित प्रश्‍न

What is the dihybrid cross ratio?

Complete the following sentence with appropriate word:

A character that is suppressed is _________.


The physical expression of a gene is called ______.


Which Mendelian idea is depicted by a cross in which the F1 generation resembles both the parents


Select the period for Mendel’s hybridization experiments


Define Genetics.


Two genes ‘A’ and ‘B’ are linked. In a dihybrid cross involving these two genes, the F1 heterozygote is crossed with homozygous recessive parental type (aa bb). What would be the ratio of offspring in the next generation?


Assertion: When the two genes in a dihybrid cross are situated on the same chromosome, the proportion of parental gene combinations is much higher than the nonparental type.

Reason: Higher parental gene combinations can be attributed to crossing over between two genes.


According to the evolutionary theory, formation of a new species is generally due to


Do genetic combination of mothers play a significant role in determining the sex of a new born?


Two pea plants - one with round yellow seeds (RRYY) and another with wrinkled green (rryy) seeds produce F1 progeny that have round, yellow (RrYy) seeds.

When F1 plants are self-pollinated, which new combination of characters is expected in F2 progeny? How many seeds with these new combinations of characters will be produced when a total 160 seeds are produced in F2 generation? Explain with reason.


Sahil performed an experiment to study the inheritance pattern of genes. He crossed tall pea plants (TT) with short pea plants (tt) and obtained all tall plants in F1 generation.

When F1 plants were cross-pollinated with plants having tt genes, a total of 800 plants were produced. How many of these would be tall, medium height or short plants? Give the genotype of F2 generation.


Mendel's law of independent assortment is based on F2 ratio of:


Describe the dihybrid cross upto F2 generation as conducted by Gregor Mendel using pure lines of Garden Pea for characters-seed shape and seed colour.


During which time period did Gregor Mendel conduct his systematic hybridisation experiments on pea plants?


In what year was Mendel's work independently rediscovered by multiple scientists?


Which aspect of Mendel's work was particularly difficult for the scientific community to accept during his lifetime?


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