A common test to find the genotype of a hybrid is by (a) crossing of one F2 progeny with female parent (b) studying the sexual behaviour of F1 progenies (c) crossing of one F1 progeny with male parent (d) crossing of one F2 progeny with male parent

A common test to find the genotype of a hybrid is by
(a) crossing of one F2 progeny with female parent
(b) studying the sexual behaviour of F1 progenies
(c) crossing of one F1 progeny with male parent
(d) crossing of one F2 progeny with male parent
by

1 Answer

Answer :

(c) crossing of one F1 progeny with male parent
by

Related questions

One of the parents of a cross has a mutation in its mitochondria. In that cross, that parent is taken as a male. During segregation of F2 progenies that mutation is found in (a) one-third of the progenies (b) none of the progenies (c) all the progenies (d) fifty percent of the progenies.

Description : One of the parents of a cross has a mutation in its mitochondria. In that cross, that parent is taken as a male. During segregation of F2 progenies that mutation is found in (a) one-third of the progenies (b) none of the progenies (c) all the progenies (d) fifty percent of the progenies.

Last Answer : (b) none of the progenies

Test cross involves (a) crossing between two genotypes with dominant trait (b) crossing between two genotypes with recessive trait (c) crossing between two F1 hybrids (d) crossing the F1 hybrid with a double recessive genotype.

Description : Test cross involves (a) crossing between two genotypes with dominant trait (b) crossing between two genotypes with recessive trait (c) crossing between two F1 hybrids (d) crossing the F1 hybrid with a double recessive genotype.

Last Answer : (d) crossing the F1 hybrid with a double recessive genotype.

Test cross in plants or in Drosophila involves crossing (a) between two genotypes with recessive trait (b) between two F1 hybrids (c) the F1 hybrid with a double recessive genotype (d) between two genotypes with dominant trait.

Description : Test cross in plants or in Drosophila involves crossing (a) between two genotypes with recessive trait (b) between two F1 hybrids (c) the F1 hybrid with a double recessive genotype (d) between two genotypes with dominant trait.

Last Answer : (c) the F1 hybrid with a double recessive genotype

A blue colour flower plant denoted by BB is cross bred with that of white colour flower plant denoted by bb. (a) State the colour of flower you would expect in their F1 generation plants. (b) What must be the percentage of white flower plants in F2 generation if flowers of F1 plants are self-pollinated? (c) State the expected ratio of the genotypes BB and Bb in the F2 progeny. -Biology

Description : A blue colour flower plant denoted by BB is cross bred with that of white colour flower plant denoted by bb. (a) State the colour of flower you would expect in their F1 generation plants. (b) What ... -pollinated? (c) State the expected ratio of the genotypes BB and Bb in the F2 progeny. -Biology

Last Answer : This is your Answer.

On selfing a plant of F1-generation with genotype “AABbCC”, the genotypic ratio in F2-generation will be (a) 3 : 1 (b) 1 : 1 (c) 9 : 3 : 3 : 1 (d) 27 : 9 : 9 : 9 : 3 : 3 : 3 : 1.

Description : On selfing a plant of F1-generation with genotype “AABbCC”, the genotypic ratio in F2-generation will be (a) 3 : 1 (b) 1 : 1 (c) 9 : 3 : 3 : 1 (d) 27 : 9 : 9 : 9 : 3 : 3 : 3 : 1.

Last Answer : (a) 3 : 1

.A normal green male maize is crossed with albino female. The progeny is albino because (a) trait for a albinism is dominant (b) the albinos have biochemical to destroy plastids derived from green male (c) plastids are inherited from female parent (d) green plastids of male must have mutated.

Description : .A normal green male maize is crossed with albino female. The progeny is albino because (a) trait for a albinism is dominant (b) the albinos have biochemical to destroy plastids derived from green male (c) plastids are inherited from female parent (d) green plastids of male must have mutated.

Last Answer : (c) plastids are inherited from female paren

Repeated crossing of hybrid progeny back to one of its parents

Description : Repeated crossing of hybrid progeny back to one of its parents

Last Answer : Ans. Back Cross

Repeated crossing of hybrid progeny back to one of its parents is called as — a. Back cross b. Top cross c. Recurrent cross d. Double cross

Description : Repeated crossing of hybrid progeny back to one of its parents is called as — a. Back cross b. Top cross c. Recurrent cross d. Double cross

Last Answer : a. Back cross

In which cross would you obtain a 9:3:3:1 ratio for F2 Progeny. What is the test cross ratio of the same cross.

Description : In which cross would you obtain a 9:3:3:1 ratio for F2 Progeny. What is the test cross ratio of the same cross. 

Last Answer : Ans: Dihybrid cross. Test cross ratio is 1:1:1:1

The increased performance of F1 hybrid over its parents is called a. Heterosis b. Crossing over c. Dominance d. Heredity

Description : The increased performance of F1 hybrid over its parents is called a. Heterosis b. Crossing over c. Dominance d. Heredity

Last Answer : a. Heterosis

Male and female sex hormone respectivley which stimulate development of sex organ, sexual behaviour, gametogensis are

Description : Male and female sex hormone respectivley which stimulate development of sex organ, sexual behaviour, gametogensis are

Last Answer : Male and female sex hormone respectivley which stimulate development of sex organ, sexual behaviour, gametogensis are

Read the following five statements (A – E) and answer as asked next to them. (A) In Equisetum, the female gametophyte is retained on the parent sporophyte. (B) In Ginkgo, male gametophyte is not independent. (C) The sporophyte in Riccia is more developed than that in Polytrichum. (D) Sexual reproduction in Volvox is isogamous. (E) The spores of slime moulds lack cell walls. How many of the above statements are correct? (a) Two (b) Three (c) Four (d) One

Description : Read the following five statements (A - E) and answer as asked next to them. (A) In Equisetum, the female gametophyte is retained on the parent sporophyte. (B) In Ginkgo, male gametophyte is not independent. (C ... . How many of the above statements are correct? (a) Two (b) Three (c) Four (d) One

Last Answer : (d) One

A test cross is carried out to (a) determine the genotype of a plant at F2 (b) predict whether two traits are linked (c) assess the number of alleles of a gene (d) determine whether two species or varieties will breed successfully.

Description : A test cross is carried out to (a) determine the genotype of a plant at F2 (b) predict whether two traits are linked (c) assess the number of alleles of a gene (d) determine whether two species or varieties will breed successfully.

Last Answer : (a) determine the genotype of a plant at F2

A Mendelian experiment consisted of breeding pea plants bearing violet flowers with pea plants bearing white flowers. What will be the result in F1 progeny ? -Science

Description : A Mendelian experiment consisted of breeding pea plants bearing violet flowers with pea plants bearing white flowers. What will be the result in F1 progeny ? -Science

Last Answer : Violet flowers

A and B genes are linked. What shall be genotype of progeny in a cross between AB/ab and ab/ab? (a) AAbb and aabb (b) AaBb and aabb (c) AABB and aabb (d) None of these

Description : A and B genes are linked. What shall be genotype of progeny in a cross between AB/ab and ab/ab? (a) AAbb and aabb (b) AaBb and aabb (c) AABB and aabb (d) None of these

Last Answer : (b) AaBb and aabb

What is common between vegetative reproduction and apomixis? (a) Both are applicable to only dicot plants. (b) Both bypass the flowering phase. (c) Both occur round the year. (d) Both produce progeny identical to the parent.

Description : What is common between vegetative reproduction and apomixis? (a) Both are applicable to only dicot plants. (b) Both bypass the flowering phase. (c) Both occur round the year. (d) Both produce progeny identical to the parent.

Last Answer : (d) Both produce progeny identical to the parent

f we cross pure-bred tall (dominant) pea plant with pure-bred dwarf (recessive) pea plant we will get pea plants of F1 generation. If we now self-cross the pea plant of F2 generation, then we obtain pea plants of F2 generation. (a) What do the plants of F2 generation look like? (b) State the ratio of tall plants to dwarf plants in F2 generation. (c) State the type of plants not found in F2 generation but appeared in F2 generation, mentioning the reason for the same. -Biology

Description : f we cross pure-bred tall (dominant) pea plant with pure-bred dwarf (recessive) pea plant we will get pea plants of F1 generation. If we now self-cross the pea plant of F2 generation, ... plants not found in F2 generation but appeared in F2 generation, mentioning the reason for the same. -Biology

Last Answer : Answer. (a) All plants of F1 generation will be tall plants. (b) 3:1 (c) Dwarf trait is recessive trait which was not expressed in the F1 generation, the recessive trait gets expressed in the F2 generation after self pollination.

Difference of F1 generation and F2 generation. -Biology

Description : Difference of F1 generation and F2 generation. -Biology

Last Answer : answer:

Difference between the P generation F1 generation and F2 generation. -Biology

Description : Difference between the P generation F1 generation and F2 generation. -Biology

Last Answer : answer:

Which of the following layers of the ionosphere has no effect on sky wave propagation during daytime? A. D B. E C. F1 D. F2

Description : Which of the following layers of the ionosphere has no effect on sky wave propagation during daytime? A. D B. E C. F1 D. F2

Last Answer : A. D

What ionospheric layer has a daytime approximate critical frequency of 8 MHz? A. F2 layer B. F1 layer C. E layer D. D layer

Description : What ionospheric layer has a daytime approximate critical frequency of 8 MHz? A. F2 layer B. F1 layer C. E layer D. D layer

Last Answer : A. F2 layer

What ionospheric layer has a daytime approximate critical frequency of 8 MHz? A. F2 layer B. F1 layer C. E layer D. D layer

Description : What ionospheric layer has a daytime approximate critical frequency of 8 MHz? A. F2 layer B. F1 layer C. E layer D. D layer

Last Answer : A. F2 layer

During the night when the F2 layer combines with F1 layer it falls to what approximate height? A. 250 km B. 350 km C. 300 km D. 400 km

Description : During the night when the F2 layer combines with F1 layer it falls to what approximate height? A. 250 km B. 350 km C. 300 km D. 400 km

Last Answer : C. 300 km

Which if the following layers of the ionosphere has no effect on sky wave propagation during the hours of darkness? A. D B. E C. F1 D. F2

Description : Which if the following layers of the ionosphere has no effect on sky wave propagation during the hours of darkness? A. D B. E C. F1 D. F2

Last Answer : A. D

At height about 180 km above the earth exist only during daylight. A. F2 layer B. D layer C. E layer D. F1 layer

Description : At height about 180 km above the earth exist only during daylight. A. F2 layer B. D layer C. E layer D. F1 layer

Last Answer : D. F1 layer

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Last Answer : C. F2

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Description : ECE Board Exam March 1996 The lowest layer in the ionosphere A. D B. F2 C. E D. F1

Last Answer : A. D

In Antirrhinum (Snapdragon), a red flower was crossed with a white flower and in F1 generation all pink flowers were obtained. When pink flowers were selfed, the F2 generation showed white, red and pink flowers. Choose the incorrect statements from the following. (a) Law of segregation does not apply in this experiment. (b) This experiment does not follow the Principle of Dominance. (c) Pink colour in F1 is due to incomplete dominance. (d) Ratio of F2 is 1 4 2 4 1 4 ( ) red p : ( ink w ) : ( ) hite .

Description : In Antirrhinum (Snapdragon), a red flower was crossed with a white flower and in F1 generation all pink flowers were obtained. When pink flowers were selfed, the F2 generation showed white, red and pink flowers. Choose the incorrect ... F2 is 1 4 2 4 1 4 ( ) red p : ( ink w ) : ( ) hite .

Last Answer : (a) Law of segregation does not apply in this experiment.

For a charge Q1, the effect of charge Q2 on Q1 will be, a) F1 = F2 b) F1 = -F2 c) F1 = F2 = 0 d) F1 and F2 are not equal

Description : For a charge Q1, the effect of charge Q2 on Q1 will be, a) F1 = F2 b) F1 = -F2 c) F1 = F2 = 0 d) F1 and F2 are not equal

Last Answer : b) F1 = -F2

Consider two pipes of same length and diameter through which water is passed at the same velocity. The friction factor for rough pipe is f1 and that for smooth pipe is f2 . Pick out the correct statement(A) f1 = f2 (B) f1 < f2 (C) f1 > f2 (D) Data not sufficient to relate f1 & f2

Description : Consider two pipes of same length and diameter through which water is passed at the same velocity. The friction factor for rough pipe is f1 and that for smooth pipe is f2 . Pick out the correct statement. (A) f1 = f2 (B) f1 < f2 (C) f1 > f2 (D) Data not sufficient to relate f1 & f2

Last Answer : (C) f1 > f2

Short Cut key for Print Preview is: a) Ctrl + F2 b) Ctrl + F3 c) Ctrl + F1 d) None of These

Description : Short Cut key for Print Preview is: a) Ctrl + F2 b) Ctrl + F3 c) Ctrl + F1 d) None of These

Last Answer : a) Ctrl + F2

Which key on the key board can be used to view slide show: a) F1 b) F2 c) F5 d) F10 e) None of The Above

Description : Which key on the key board can be used to view slide show: a) F1 b) F2 c) F5 d) F10 e) None of The Above

Last Answer : c) F5

Which among the following short cut key is used to check spelling: a) F2 b) F1 c) F7 d) None of The Above

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Last Answer : c) F7

If f1 and f2 are the distances from the optical centre of a convex lens of focal length to conjugate two points P1 and P2 respectively, the following relationship holds good (A) f = f1 + f2 (B) f = ½ (f1 + f2) (C) 1/f = 1/f1 + 1/f2 (D) None of these

Description : If f1 and f2 are the distances from the optical centre of a convex lens of focal length to conjugate two points P1 and P2 respectively, the following relationship holds good (A) f = f1 + f2 (B) f = ½ (f1 + f2) (C) 1/f = 1/f1 + 1/f2 (D) None of these

Last Answer : (C) 1/f = 1/f1 + 1/f2

In Antirrhinum two plants with pink flowers were hybridized. The F1 plants produced red, pink and white flowers in the proportion of 1 red, 2 pink and 1 white. What could be the genotype of the two plants used for hybridisation? Red flower colour is determined by RR and white by rr genes. (a) rrrr (b) RR (c) Rr (d) rr

Description : In Antirrhinum two plants with pink flowers were hybridized. The F1 plants produced red, pink and white flowers in the proportion of 1 red, 2 pink and 1 white. What could be the genotype of the two plants used for ... is determined by RR and white by rr genes. (a) rrrr (b) RR (c) Rr (d) rr

Last Answer : (c) Rr

The cross of F1 hybrid with an individual having recessive phenotype for concerned trait is called a. Test crossb. Multiple crossc. Top crossd. Polly cross

Description : The cross of F1 hybrid with an individual having recessive phenotype for concerned trait is called a. Test cross b. Multiple cross c. Top cross d. Polly cross

Last Answer : a. Test cross

A cross in which an organism showing a dominant phenotype is crossed with the recessive parent in order to know its genotype is called (a) monohybrid cross (b) back cross (c) test cross (d) dihybrid cross.

Description : A cross in which an organism showing a dominant phenotype is crossed with the recessive parent in order to know its genotype is called (a) monohybrid cross (b) back cross (c) test cross (d) dihybrid cross.

Last Answer : (c) test cross

Give two reasons for the appearance of variations among the progeny formed by sexual reproduction. -Biology

Description : Give two reasons for the appearance of variations among the progeny formed by sexual reproduction. -Biology

Last Answer : Now, the two major reasons for appearance of variation among the progeny formed from sexual reproduction are; crossing over in which the DNA gets exchanged between the homologous chromosomes during the meiosis that causes variation in the offspring.

Select the wrong statement. (a) In oomycetes, female gamete is smaller and motile, while male gamete is larger and non- motile. (b) Chlamydomonas exhibits both isogamy and anisogamy and Fucus shows oogamy. (c) Isogametes are similar in structure, function and behaviour. (d) Anisogametes differ either in structure, function or behaviour.

Description : Select the wrong statement. (a) In oomycetes, female gamete is smaller and motile, while male gamete is larger and non- motile. (b) Chlamydomonas exhibits both isogamy and anisogamy and ... in structure, function and behaviour. (d) Anisogametes differ either in structure, function or behaviour.

Last Answer : (a) In oomycetes, female gamete is smaller and motile, while male gamete is larger and non- motile.

. Select the incorrect statement. (a) Human males have one of their sex-chromosome much shorter than other. (b) Male fruit fly is heterogametic. (c) In male grasshoppers, 50% of sperms have no sex-chromosome. (d) In domesticated fowls, sex of progeny depends on the type of sperm rather than egg.

Description : . Select the incorrect statement. (a) Human males have one of their sex-chromosome much shorter than other. (b) Male fruit fly is heterogametic. (c) In male grasshoppers, 50% of sperms have no sex-chromosome. (d) In domesticated fowls, sex of progeny depends on the type of sperm rather than egg.

Last Answer : (d) In domesticated fowls, sex of progeny depends on the type of sperm rather than egg.

Select the correct Match : (1) Ribozyme - Nucleic acid (2) F2 x Recessive parent - Dihybrid cross (3) TH. Morgan - Transduction (4) G. Mendel - Transformation

Description : Select the correct Match : (1) Ribozyme - Nucleic acid (2) F2 x Recessive parent - Dihybrid cross (3) TH. Morgan - Transduction (4) G. Mendel - Transformation

Last Answer : (1) Ribozyme - Nucleic acid

F1 x homozygous recessive parent

Description : F1 x homozygous recessive parent

Last Answer : Ans. Test Cross

When Gregor Mendel crossed a tall plant with a short plant, the F1 plants inherited a. an allele for tallness from each parent. b. an allele for tallness from the tall parent and an allele for shortness from the short parent. c. an allele for shortness from each parent. d. an allele from only the tall parent.

Description : When Gregor Mendel crossed a tall plant with a short plant, the F1 plants inherited a. an allele for tallness from each parent. b. an allele for tallness from the tall parent and an allele for shortness ... parent. c. an allele for shortness from each parent. d. an allele from only the tall parent.

Last Answer : b. an allele for tallness from the tall parent and an allele for shortness from the short parent.

How can you tell if a female dog has had sexual inner course with male human?

Description : How can you tell if a female dog has had sexual inner course with male human?

Last Answer : Need answer

The ‘double standard’ normally refers to the difference in social attitude towards [A] Homosexual and heterosexual sex activity [B] Child and Adult sexual activity [C] Male and female sexual activity [D] Working class and middle class sexual activity

Description : The ‘double standard’ normally refers to the difference in social attitude towards [A] Homosexual and heterosexual sex activity [B] Child and Adult sexual activity [C] Male and female sexual activity [D] Working class and middle class sexual activity

Last Answer : [C] Male and female sexual activity

Which of the following statements accurately describes a risk factor for depression? a) History of physical or sexual abuse History of physical or sexual abuse and current substance abuse are risk factors for depression. b) Male gender A risk factor for depression is female gender. c) Age over 50 years A risk factor for depression is onset before 40 years. d) Negative family history of depression Family history of depression is a risk factor.

Description : Which of the following statements accurately describes a risk factor for depression? a) History of physical or sexual abuse History of physical or sexual abuse and current substance abuse are risk ... years. d) Negative family history of depression Family history of depression is a risk factor.

Last Answer : a) History of physical or sexual abuse History of physical or sexual abuse and current substance abuse are risk factors for depression.

Study the pedigree chart of a certain family given below and select the correct conclusion which can be drawn for the character. (a) The female parent is heterozygous. (b) The parents could not have had a normal daughter for this character. (c) The trait under study could not be colour blindness. (d) The male parent is homozygous dominant.

Description : Study the pedigree chart of a certain family given below and select the correct conclusion which can be drawn for the character. (a) The female parent is heterozygous. (b) The parents could not ... The trait under study could not be colour blindness. (d) The male parent is homozygous dominant.

Last Answer : (a) The female parent is heterozygous.

When two unrelated individuals or lines are crossed, the performance of F1 hybrid is often superior to both its parents. This phenomenon is called (a) heterosis (b) transformation (c) splicing (d) metamorphosis.

Description : When two unrelated individuals or lines are crossed, the performance of F1 hybrid is often superior to both its parents. This phenomenon is called (a) heterosis (b) transformation (c) splicing (d) metamorphosis.

Last Answer : (a) heterosis

What is the hybrid you obtain when a cross takes place between female donkey anda male horse?

Description : What is the hybrid you obtain when a  cross takes place between female donkey anda  male horse?

Last Answer : Hinny

Due to the cross between TTRr × ttrr the resultant progenies show what percent of tall, red flowered plants? (a) 50% (b) 75% (c) 25% (d) 100%

Description : Due to the cross between TTRr × ttrr the resultant progenies show what percent of tall, red flowered plants? (a) 50% (b) 75% (c) 25% (d) 100%

Last Answer : (a) 50%