Crossing over is the exchange of genetic material between homologous chromosomes during meiosis, which leads to variation in offspring.
Advertisements
Advertisements
प्रश्न
What is crossing over?
अति संक्षिप्त उत्तर
Advertisements
उत्तर
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Linkage and crossing-over of genes are alternatives of each other. Justify with the help of an example.
Answer the following question.
British geneticist R.C. Punnett developed a graphical representation of a genetic cross called “Punnett Square”. Mention the possible result this representation predicts of the genetic cross carried.
Answer the following question.
Explain linkage and recombination as put forth by T.H. Morgan based on his observations with the Drosophila melanogaster crossing experiment.
Analyze the following statements and select the correct option.
- Due to incomplete linkage, the parental traits are inherited in offsprings.
- Due to incomplete linkage, new traits occur in offsprings.
- X chromosome of Drosophila males show complete linkage.
- In Zea mays - colour and shape of grain show complete linkage
In a given plant, red colour (R) of fruit is dominant over white fruit (r); and tallness (T) is dominant over dwarfness (t). If a plant with genotype RRTt is crossed with a plant of genotype rrtt, what will be the percentage of tall plants with red fruits in the next generation?
A and B genes are linked. What shall be the genotype of progeny in a cross between AB/ab and ab/ab?
Genes located very close to one another on same chromosome tend to be transmitted together and are called as ______.
What is true about the crossing over between linked genes?
The following are results of crossing a female fly (AaBb) with a male fly (aabb).
- AaBb 1005
- aabb 1000
- Aabb 200
- aaBb 210
Which two genotypes are the recombinant offspring?
When the parental gene combine with itself; termed as
