English

Sahil performed an experiment to study the inheritance pattern of genes. He crossed tall pea plants (TT) with short pea plants (tt) Give a reason why only tall plants are observed in F1 progeny. - Science

Advertisements
Advertisements

Question

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.

Give a reason why only tall plants are observed in F1 progeny.

Answer in Brief

Solution

Traits like ‘T’ are called dominant traits, while those that behave like ‘t’ are called recessive traits. Alternatively, accept the definition of dominant and recessive traits with examples of T and t respectively or Alternatively accept the law of Dominance with examples of T and t.

shaalaa.com
  Is there an error in this question or solution?
2021-2022 (April) Term 2 Sample

RELATED QUESTIONS

Two heterozygous parents are crossed. If the two loci are linked what would be the distribution of phenotypic features in F1 generation for a dihybrid cross?


Explain dihybrid cross.

What is a dihybrid cross? How did Mendel perform this cross?


State Mendel’s law of Independent Assortment.


Test cross involves


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?


The genotype of a plant showing the dominant phenotype can be determined by


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


Identify the statementls that is/are NOT the correct reason/s for Mendel's success in his hybridization experiments.

i. Each factor controlled the single trait and is located on separate chromosomes.

ii. In the pea plant, contrasting characters can be easily recognized.

iii. Mendel carefully recorded the number of plants of each type and expressed his results as ratios.

iv. Mendel performed biochemical assays for identifying the position of 'factors' on chromosome.


Findings of Gregor Mendel were rediscovered by the following scientists EXCEPT for ______


A normal green male maize is crossed with albino female. The progeny is albino because ______.


A dihybrid condition is ______.


Mendel’s Law of independent assortment holds good for genes situated on the ______.


Each gamete carry ______.


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.


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.

What will be set of genes present in the F1 generation?


Which of the following statement is not correct for two genes that show 50% recombination frequency?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×