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Question
Test cross involves
Options
Crossing between two genotypes with recessive trait
Crossing between two F1 hybrids
Crossing the F1 hybrid with a double recessive genotype
Crossing between two genotypes with dominant trait
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Solution
Crossing the F1 hybrid with a double recessive genotype
RELATED QUESTIONS
Explain Mendel’s dihybrid ratio with the help of any one cross.
Complete the following sentence with appropriate word:
_______ is the ratio of dihybrid cross.
Multiple Choice Question
When two individuals differing in at least one character are crossed, the process is known as:
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.
A fruit fly exhibiting both male and female traits is ______.
In a dihybrid cross, F2 phenotypic ratio is 13 : 3. It is case of ______.
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.
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:
According to the evolutionary theory, formation of a new species is generally due to
