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Questions
Define the following:
test cross.
What is test cross?
Solution
Test cross: The cross between F1 hybrid and its homozygous recessive parent is called a test cross.
RELATED QUESTIONS
Linkage and crossing-over of genes are alternatives of each other. Justify with the help of an example.
Write the scientific name of the organism Thomas Hunt Morgan and his colleagues worked with for their experiments. Explain the correlation between linkage and recombination with respect to genes as studied by them.
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.
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.
Name the type of cross that would help to find the genotype of a pea plant bearing violet flowers.
Very Short Answer Question.
Give one example of complete sex linkage?
How many linkage groups are present in Drosophila melanogaster?
Give detail account of sex-linked inheritance.
______ results in separation of linkage groups during meiosis.
When a white eye Drosophila male (Xr Y) is crossed to a red eye female (XR XR), in the F2 generation all the females are red eyed and 50% males are white eyed. In a criss-cross test, when males are white eyed. In a criss-cross test, when a white eyed female (Xr Xr) is crossed to a red eye male (XRY), the F1 generation offspring had white eyed males while the female offspring bad red eyes. Instead of crossing of a white eyed female (Xr Xr} to a red eyed male (XRY), white eye female (XrXr) to white eye male (XrY) is crossed, the F1 generation will have the following phenotypes and genotype.
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
Which of the following will not result in variations among siblings?
Crossing over in diploid organism is responsible for ______.
Two crosses between the same pair of genotypes or phenotypes in which the sources of the gametes are reversed in one cross, is known as ______.
Which of the following is correct for the condition when plant YyRr is back crossed with the double recessive parent?
What is the pattern of inheritance in the above pedigree chart?
Linkage groups can be separated during ______ in meiosis.
Which of the following statement is correct?
