Trihybrid cross - class-XII
Description: trihybrid cross | |
Number of Questions: 28 | |
Created by: Chandra Bhatti | |
Tags: classical genetics botany |
What phenotypic ratio is obtained by selfing of a trihybrid in which two gene pair are completely linked?
What would be the sum of phenotypes and genotypes obtained from a trihybrid test cross?
A plant with genotype AaBbCC produce $40millon$ pollen grains. Then calculate how many pollen grains will be with at least two dominant alleles?
In a cross in Drosophila, the heterozygous animal with grey body $(b+)$ and long wing $(vg+)$ with black body and vestigial wings, the progeny has the animals in the following ratio -grey vestigial 24 : grey long 126 : blck long 26 : black vestigial 124. What is the frequency of recombinants in the population?
A polygenic trait is controlled by $3$ genes $A, B$ and $C$. In a cross $AaBbCc \times AaBbCc$, the phenotypic ratio of the offsprings was observed as
$1 : 6 : x : 20 : x : 6 : 1$ What is the possible value of $x$?
Frequency of a perfect heterozygous cross between AABBCC and AaBbCc is
A typical dihybrid and trihybrid test-cross ratio are respectively:
Number of genotypes produced when individuals of genotype 'YyRrTt' are crossed with each other
Trihybrid ratio is
A plant of genotype AABbCC is selfed. Phenotypic ratio of $F _2$ generation would be
Number of phenotypes possible from AaBbCc $\times$ AaBbCc is
How many types of gametes will be produced by individuals of AABbcc genotype?
How many types of gametes are expected from the organism with genotype AA BB CC?
The trihybrid phenotypic ratio of $27:9:9:9:3:3:3:1$ is obtained because of.
A plant of F$ _{1}$-generation is having the genotype "AABbCC". On selfing of this plant, what is the phenotypic ratio in F$ _{2}$-generation?
What proportion of the offsprings obtained from cross $AABBCC \times AaBbCc$ will be completely heterozygous for all the genes segregated independently?
Find out the number of plants produced with genoptype AabbCc out of 256 seeds collected from $F 2$ progennines of a trihybrid cross ______.
Frequency of recombinant plants in the $F _2$ generation of a trihybrid cross is?
The offspring of AA bb $\times$ aa BB is crossed with, aabb. The genotypic ratio of progeny will be
What percentage of offsprings would have the genotype AA Bb Cc in F2 generation of a trihybrid cross __________.
In humans, pointed eyebrows (B) are dominant over smooth eyebrows (b). Seemas father has pointed eyebrows, but she and her mother have smooth. What is the genotype of the father?
On selfing a plant of ${F} _{1}$ generation with genotype "AABbCC", the genotypic ratio in ${F} _{2}$-generation will be
In $TtggRr \times TtGgRr$, the percentage of recessive individuals will be
In trihybrid, when all gene show complete linkage then what is the ratio of test cross?
Self fertilising trihybrid plants form
How many different kinds of gametes will be produced by a plant having the genotype AaBbCC?
If a quantitative character is influenced by the additive effect of four genes how many phenotypic categories are expected in the progeny of a tetrahybrid cross
When a hybrid (AaBbCcDd) is selfed then the genotypes AABbCCDd, AaBBCcDd, AaBbCcDd, aabbccdd would be in a proportion of?