Question 1 :
If a cross is made between two individuals, each having genotype Bb, two offsprings are obtained. Out of these first has dominant trait. What is the probability that the second offspring will exhibit recessive trait?

Question 2 :
For the alleles $A,B,C,D$ where, $A=B>C=D$ the number of phenotypes obtained will be

Question 3 :
A cross done between a homozygous recessive and a heterozygous plant is called as<br/>

Question 5 :
The Punnett square below shows a cross between a pure tall and heterozygous tall plant. What is the total number of tall offspring represented in the Punnett square?<br/>T- tall plant<br/>t- short plant<br/><table class="wysiwyg-table"><tbody><tr><td></td><td>T</td><td>T</td></tr><tr><td>T</td><td>TT</td><td>TT</td></tr><tr><td>t</td><td>Tt</td><td>Tt</td></tr></tbody></table>

Question 6 :
The cross used to ascertain whether the plant is homozygous or heterozygous is

Question 7 :
Mendel, for his studies chose pea plants and considered many contrasting characteristics present in the pea plants. One of characteristics not considered by him was

Question 8 :
In the monohybrid cross Tt x tt, the phenotypic ratio of the progeny would be&#160;

Question 9 :
An offspring of two homozygous parents differing from one another by alleles at only one gene locus is

Question 11 :
F$_1$ generation of a cross between a red flowered plant and a white flowered plant predominantly consisted of red flowered plants indicating red flower trait is

Question 13 :
Among seven pairs of traits studied by Mendel, the number of traits related to flower, pod and seed were

Question 15 :
Which one of the following cannot be explained on thebasis of Mendel's law of Dominance?

Question 16 :
When pure long plant having white flower is crossed with pure dwarf plant having red flower, the dwarf progeny in F$_2$ generation will be<br/>

Question 17 :
"Gametes are never hybrid". It is a statement of law of

Question 19 :
The percentage of heterozygous individuals obtained in F$_{2}$ generation from selfing the plants with genotype Rr would be

Question 20 :
What will be the probable phenotype ratio if a white summer squash (Wwyy) is crossed to a yellow summer squash (wwYy)?

Question 22 :
Choose the correct answer from the alternatives given.<br>Considera cross in which a trait is inherited by incomplete dominance. What percentageof the F2 from the mating of homozygous dominant and homozygous recessiveindividuals will possess the dominant phenotype?

Question 26 :
In Garden Pea, round shape is dominant over wrinkled shape. A pea plant heterozygous for round shape of seed is selfed and 1600 seeds produced during the cross are subsequently germinated. How many offspring will have parental phenotype

Question 28 :
The percentage of true breeding plants in the F2 generation of a monohybrid cross is ...........

Question 29 :
How many pairs of contrasting characters in pea were chosen by Mendel?

Question 30 :
If the cells of an organism heterozygous for two pairs of characters viz. Aa and Bb undergo meiosis, what will be the genotypes of the gametes produced?

Question 31 :
In sweet pea, genes C and P are necessary for colour in flowers. The flowers are white in the absence of either or both the genes. What will be the percentage of coloured flowers in the offspring of the cross $Ccpp \times ccPp$ ?<br>

Question 32 :
When a pure bred, red flower -producing plant of genotype RR is crossed with pure bred , white flowers-producingplantof genotype rr,all the ${ F }_{ 1 }$ plants produced pink flowers If all the plant in each generation from ${ F }_{ 1 }$ to${ F }_{ 6 }$ are selfed, what will be the percentage of plants with red and white flowers in the final population of plants with red and white flowers in the final population consisting of a large number of individuals? (Consider that flowers colour has no effect on reproduction and survival.)

Question 33 :
Heterozygous tall (Tt) and dwarf(tt) pea plant are crossed. The ratio in the offspring shall be

Question 34 :
Which one of the following in man is controlled by dominant genes?

Question 36 :
<br/>In&#160;all the Mendels experiments, the two alleles causing a trait were

Question 38 :
What proportion of the $f1$ generation will be short will wrinkled seeds when pure tall round plant is crossed with pure dwarf wrinkled seeded plant?

Question 40 :
The genotype of a plant showing the dominant phenotype can be determined by

Question 41 :
Which of the following inheritable traits was not selected by Mendel for his experiments?

Question 42 :
One of the genes present exclusively on the X-chromosome in humans is concerned with

Question 43 :
In garden pea plant, a pure line with round seeds(RR) is crossed with a pure line having wrinkled seeds (rr). The ratio of round seed plants to wrinkled seed plants in $F2$ generation will be?

Question 44 :
Monohybrid cross F${_1}$ progeny Tt is inbred. What will be the maximum types of F${_2}$ genotypes?

Question 45 :
Which of the following is correct about traits chosen by Mendel?

Question 47 :
Find the correct statements<br>(i) $F_1$ progeny is first hybrid generation and progeny resembles either of parent.<br>(ii) $F_2$progeny is a resultant hybrid generation of cross pollination among $F_1$ progeny and the progeny shows both dwarf and tall plants<br>(iii) $F_2$ progeny is second hybrid generation produced by selfing $F_1$ hybrids and progeny contains both dwarf and tall plants<br>(iv) Proportion of probability of plants that are dwarf is 1/4 of $F_2$plants while 3/4 of $F_2$plants are tall

Question 48 :
Which one of the following traits studied by Mendel in garden pea was a recessive character?

Question 49 :
In Mendel's seven characters of Pea, total number of colours tested by him was _________.

Question 50 :
For Mendelian dominance, a man is homozygous and woman is heterozygous for a disease. What is the percentage of their homozygous children for the said trait?<br/>

Question 51 :
A blue fowl was obtained after crossing between a white and black fowl. Then the ratio of their ${F_2}$ generation will be

Question 53 :
What is the phenotypic ratio of F2 generation of monohybrid cross ?

Question 56 :
The genotype of offspring formed from Tt x tt will be ________.

Question 57 :
A tobacco plant heterozygous for albinism is self pollinated and 1200 seeds are subsequently germinated.How many seedlings would have the parental genotype?

Question 60 :
How many different types of gametes can be formed by Fl&#160;progeny, resulting from the following cross:<br/>AABBCC x aabbcc<br/>

Question 61 :
Mendel&#160;formulated the law of purity of gametes on the basis of

Question 63 :
The law of segregation of characters postulated by Mendel can be related to

Question 66 :
In pea plant, yellow seeds is dominant over green seeds. If heterozygous plant having yellow seeds crossed with plant having green seeds then what is the ratio of yellow and green plant in $F_1$ generation?

Question 67 :
A cross was made between tall and dwarf plants. In $F_1$ plants were selfed, the tall and dwarf plants appeared in 3:1 ratio in $F_2$ generation. This phenomenon is known as

Question 69 :
Grain colour of wheat is determined by three pairs of polygenes. What proportion of F$_2$ progeny will resemble either parents following a cross of AABBCC (dark colour) with aabbcc (light colour)?

Question 71 :
In Drosophila, the allele for a normal grey body colour G is dominant to ebony body g. The following tablesummarises the results of several crosses.<br><br><br><table class="wysiwyg-table _wysihtml5-temp-1534531855229"><tbody class=" _wysihtml5-temp-1534531855229"><tr class=" _wysihtml5-temp-1534531855229"><td class=" _wysihtml5-temp-1534531855229">S. No.</td><td class=" _wysihtml5-temp-1534531855229">Cross</td><td class=" _wysihtml5-temp-1534531855229">Result</td></tr><tr class=" _wysihtml5-temp-1534531855229"><td class=" _wysihtml5-temp-1534531855229">1.</td><td class=" _wysihtml5-temp-1534531855229">strain 1*gg</td><td class=" _wysihtml5-temp-1534531855229">all wild-type</td></tr><tr class=" _wysihtml5-temp-1534531855229"><td class=" _wysihtml5-temp-1534531855229">2.</td><td class=" _wysihtml5-temp-1534531855229">strain 2*gg</td><td class=" _wysihtml5-temp-1534531855229">1 wild type: 1 ebony</td></tr><tr class=" _wysihtml5-temp-1534531855229"><td class=" _wysihtml5-temp-1534531855229">3.</td><td class=" _wysihtml5-temp-1534531855229">strain 3*gg</td><td class=" _wysihtml5-temp-1534531855229">all ebony</td></tr><tr class=" _wysihtml5-temp-1534531855229"><td class=" _wysihtml5-temp-1534531855229">4.</td><td class=" _wysihtml5-temp-1534531855229">strain 4*Gg</td><td class=" _wysihtml5-temp-1534531855229">3 wild type:1 ebony</td></tr></tbody></table><br>Which strain both have the genotype Gg?

Question 76 :
How many pairs of true breeding varieties were selected by Mendel for his experiment on pea plant?<br/>

Question 77 :
A tall plant was grown in nutrient deficient soil and remained dwarf. When it is crossed with dwarf plant then

Question 78 :
When a dihybrid cross is fit into a Punnett Square with 16 boxes, the maximum number of different phenotypes available are

Question 80 :
Mendel observed red flowers in $F_1$ when he crossed red and white flowered plants because of

Question 81 :
Which one of the following will not be possible if the allele for dark-colored hair is dominant over the allele for light-coloured hair?

Question 84 :
Which law of Mendel is explained in the given statement?<br/>&#34;In a dissimilar pair of factors, one member of the pair express in presence of other members&#34;

Question 85 :
The presence of recessive part in a large populationis found to be 16%. The frequency of dominantallele in that population is

Question 86 :
When a cross is made between a tall plant with yellow seeds (Tt Yy) and a tall plant with green seeds (Tt yy), what is true regarding the proportions of phenotypes of the offsprings in F1 generation?<br>Proportion of Tall and Green Proportion of Dwarf and Green

Question 87 :
In garden pea, round shape of seeds is dominant over wrinkled shape. A pea plant heterozygous for round shape of seed is selfed and 1600 seeds produced during the cross are subsequently germinated. How many seedlings would have the parental phenotype?

Question 88 :
A cross between a tall pea plant and dwarf pea plant resulted tall progenies in $F_1$ generation, because

Question 89 :
In case of taster and non-taster human beings, T is&#160;for dominance and t is for recessive gene. Which of&#160;the following would not be able to taste PTC (Phenylthiocarbamide)?

Question 90 :
If a plant is heterozygous tall and produced tall as well as dwarf in $F_2$ generation, it represents the law of

Question 91 :
Which of the following statement is true about Mendel's law of segregation?<br/>

Question 92 :
If in a garden pea plant, a cross is made between red flowered and white flowered plants. What will be the phenotypic ratio in F$_{2}$&#160;generation?

Question 93 :
In an organism, tall phenotype is dominant over recessive dwarf phenotype and the alleles are designated as T and t, respectively. Upon crossing two different individuals, total 250 offsprings were obtained, out of which 124 displayed tall phenotype and rest were dwarf. Thus, the genotype of the parents were<br/>

Question 94 :
Pure tall plants are crossed with pure dwarf plants. In the ${F}_{1}$ generation, all plants were tall. These tall plants of ${F}_{1}$ generation were selfed and the ratio of tall to dwarf plants obtained in $F_2$ was $3 : 1$. This is called as

Question 95 :
Consider the following four statements (1,2,3 and 4) and select the right option for incorrect statement.<br>a.Mendelian experiments had large sampling size, which gave greater credibility to the data that he collected.<br>b.Recessive allele influences the appearance of phenotype even in the presence of an alternative allele.<br>c.multiple alleles can be found only when population studies are made.<br>d.In $F_2$, generation of Mendelian monohybrid cross, the tall and Dwarf traits were identical to their parental types and showed blending.

Question 96 :
Grain colour in wheat is determined by three pairs of polygenes. Following the cross AABBCC (dark colour) x aabbcc (light colour), how many plants will be produced with the genotype AABBCC?

Question 97 :
Scientists are investigating plants as experimental organisms for studies of genetics. The scientist in charge claims that these plants use complete dominance as their mode of inheritance for the traits being investigated.<br><br>Which of the following statements would support this claim?

Question 98 :
Which one is not a dominant trait amongst seven Pea traits chosen by Mendel?

Question 99 :
A tall true breeding&#160; garden pea plant is crossed with a dwarf true breeding garden pea plant. When the ${ F }_{ 1 }$ plants were selfed the resulting genotypes were in the ratio of<br/>

Question 100 :
Name the scientist who converted Mendel's conclusions into principles of heredity

Question 101 :
Assertion: A gamete may carry either of the alleles but not both. Reason: This is Mendel's second law or law of independent assortment.

Question 102 :
Phenotypic and genotypic ratios according to Mendel's pattern of inheritance is&#160;

Question 103 :
The graphical representation to calculate the probability of all possible genotypes of offspring in a genetic cross in called

Question 104 :
If Mendel might have studied 7 pairs of characters&#160;in a plant with 12 chromosomes, instead of 14, then

Question 105 :
A true breeding plant producing red flowers is crossed with a pure plant producing white flowers. Allele for red colour of flower is dominant. After selfing the plants of first filial generation, the proportion of plants producing white flowers in the progeny would be<br>

Question 106 :
Mendel studied the inheritance patterns of 12 different&#160;pairs of characters of the pea plant. He could ascertain&#160;the independent assortment for only 7 of these 12&#160;pairs of characters by repeated experiments. What&#160;can be deduced from this?