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

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

Advertisements
Advertisements

प्रश्न

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

दीर्घउत्तर
Advertisements

उत्तर

Linkage is defined as the coexistence of two or more genes in the same chromosome. Linked genes are inherited together if they are on the same chromosome and close to each other.

For example, a cross between a yellow-bodied and white-eyed and wild-type parent in a Drosophila will produce wild-type and yellow-white progenies. It is because yellow-bodied and white-eyed genes are linked. Consequently, progenies inherit both traits simultaneously.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 5: Principles of Inheritance and Variation - NCERT EXERCISES WITH ANSWERS [पृष्ठ २१२]

APPEARS IN

नूतन Biology [English] Class 12 ISC
अध्याय 5 Principles of Inheritance and Variation
NCERT EXERCISES WITH ANSWERS | Q 11. | पृष्ठ २१२

संबंधित प्रश्न

What is the dihybrid cross ratio?

State Mendel’s law of Independent Assortment.


The physical expression of a gene is called ______.


Explain with an example the inheritance of the dihybrid cross. How is it different from monohybrid cross?


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?


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


Select the period for Mendel’s hybridization experiments


Explain the law of dominance in a monohybrid cross.


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 cross between two tall plants resulted in offspring having few dwarf plants. What would be the genotypes of both the parents?


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


A dihybrid condition is ______.


In a dihybrid cross, F2 phenotypic ratio is 13 : 3. It is case of ______.


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


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?


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.


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


From the list given below, select the character which can be acquired but not inherited


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?


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


In the Mendelian dihybrid cross when heterozygous round yellow is self grossed, round green offsprings are represented by the genotype.


The Law of independent assortment is applicable for the traits which ______


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


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×