हिंदी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

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

Advertisements
Advertisements

प्रश्न

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

विकल्प

  • non-homologous chromosomes

  • homologous chromosomes

  • extra nuclear genetic element

  • same chromosome

MCQ
रिक्त स्थान भरें
Advertisements

उत्तर

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

Explanation:

Mendel’s law of independent assortment states that genes for different traits can segregate independently during the formation of gametes. This law holds true only for genes situated on different (non-homologous) chromosomes because such genes assort independently during meiosis. Genes located on the same chromosome tend to be inherited together (linked) unless crossing over occurs between them. Hence, independent assortment applies primarily to genes on non-homologous chromosomes, not on the same chromosome or homologous chromosomes carrying alleles of the same gene.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 5: Principle of Inheritance and Variation - MULTIPLE CHOICE QUESTIONS [पृष्ठ ३१]

APPEARS IN

एनसीईआरटी एक्झांप्लर Biology Exemplar [English] Class 12
अध्याय 5 Principle of Inheritance and Variation
MULTIPLE CHOICE QUESTIONS | Q 11. | पृष्ठ ३१
नूतन Biology [English] Class 12 ISC
अध्याय 4 Principles of Inheritance and Variation
Test Your Progress | Q 1. 58. | पृष्ठ १९९

संबंधित प्रश्न

Filling the blank based on the given relationship.

3 : 1 Monohybrid : : 9 : 3 : 3 : 1 : ______


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


A homozygous Tall plant (T) bearing red coloured (R) flowers is crossed with a homozygous dwarf plant (t) bearing white flowers (r):
(1) Give the Genotype and Phenotype of the F2 generation.
(2) Give the possible combinations of the gametes that can be obtained from the F2 hybrid.
(3) Give the dihybrid ratio and the phenotype of the offsprings of the F2 generation when two plants of the F1 generation above are crossed.


Give Technical Term:

The ratio of offspring on F2 generation in a dihybrid cross.


Under which conditions does the law of independent assortment hold good and why?


Select the correct statement from the ones given below with respect to dihydrid cross


In a test cross involving F1 dihybrid flies, more parental type offspring were produced than the recombination type offspring. This indicates


Name the seven contrasting traits of Mendel.


Define Genetics.


What are the reasons for Mendel’s successes in his breeding experiment?


In a dihybrid cross, if you get 9:3:3:1 ratio it denotes that ______.


The process of mating between closely related individuals is ______.


A fruit fly exhibiting both male and female traits is ______.


Given below is a dihybrid cross performed on Drosophila.

Which of the following conclusions can be drawn on the basis of this cross? When yellow bodied (y), white-eyed (w) Drosophila females were hybridized with brown bodied (y+), red-eyed males (w+) and F1 progenies were intercrossed, F2 generation would have shown the following ratio:


What is the difference between genetic drift and change due to natural selection?


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


How is the sex of a newborn determined in humans?


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.


Which one of the following genetic ratios will be obtained in a dihybrid test cross:


When two hybrids rrTt and Rrtt are gassed, the phenotype ratio of offspring should be:


The ratio of 9 : 3 : 3 : 1 is due to:


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


Which of the following was NOT cited as a reason for the initial rejection of Mendel's work by the scientific community?


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


Which three scientists are credited with independently rediscovering Mendel's work in 1900?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×