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

1 Answer

Answer :

a. Test cross

Related questions

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.

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

Description : 5 Consider a cross in which a trait is inherited by incomplete dominance. What percentage of the F2 from the matng of homozygous dominant and homozygous recessive individuals will possess the dominant phenotype? a) 0 per cent b) 25 per cent c) 50 per cent d) 75 per cent

Last Answer : ANS: b 25 per cent

Description : What can you determine about an organism's genotype if a recessive trait is expressed in an organism's phenotype?

Last Answer : Feel Free to Answer

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

Description : A short-haired guinea pig is crossed with a long-haired guinea pig. All of the F1 offspring from the cross are short-haired.Which phenotype is dominantA. long hairB. short hairC. SSD. ss?

Last Answer : Abyssinian

Description : 4. Crossing a Dominant character with (Homozygous & Hetrozygous) with a recessive trait to know the genome is called;- a) Back cross b) Monohybrid Cross C) Test Cross d)Dihybrid Cross

Last Answer : C) Test Cross

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.

Description : One trait a plant can have is either red leaves (R) or brown leaves (r). Another trait is tall stems (T) or short stems (t). A plant used in a dihybrid cross has the genotype RRTt. what is the phenotype of this plant?

Last Answer : red leaves, tall stems

Description : Cross between hybrid and recessive parent is: (a) Back cross (b) Test cross (c) Monohybrid cross (d) Dihybrid cross Ans. (b) ................................................----- ... - PMT, AIIMS, MBBS,lucknow 1. Largest egg of plant kingdom belongs to: (a) Cycas (b) Pinus (c) Psidium (d) Mangfera

Last Answer : Ans. ((a))

Description : Breeding method mostly used for development of disease resistance variety is — a. Pedigree method b. Selection c. Back cross d. Mutation breeding

Last Answer : c. Back cross

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

Description : 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

Last Answer : (c) crossing of one F1 progeny with male parent

Description : F1 x homozygous recessive parent

Last Answer : Ans. Test 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

Description : The physical appearance and properties of an organism which is the expression of the genetic makeup is called the: a) phenotype b) pangenesis c) parental trait d) genotype

Last Answer : ANSWER: A -- PHENOTYPE

Description : Would a trait that has only two distinct phenotype more likely be a single-gene trait or a polygenic trait How do you know (3 points)?

Last Answer : Need answer

Description : How is it possible for two individuals to have the same phenotype but a different genotypes for a trait?

Last Answer : it is possible beccause you dont always need both

Description : A pleiotropic gene (a) controls a trait only in combination with another gene (b) controls multiple traits in an individual (c) is expressed only in primitive plants (d) is a gene evolved during Pliocene.

Last Answer : (a) controls a trait only in combination with another gene

Description : The genotype of a plant showing the dominant phenotype can be determined by (a) test cross (b) dihybrid cross (c) pedigree analysis (d) back cross.

Last Answer : a) test cross

Description : Is it true that gregor mendel called an idividual that has one dominant allele and one recessive allelefor a trait a purebred?

Last Answer : yes

Description : In a test cross involving F1 dihybrid flies, more parental-type offspring were produced than the recombinant-type offspring. This indicates (a) the two genes are linked and present on the ... two genes are located on two different chromosomes (d) chromosomes failed to separate during meiosis.

Last Answer : (a) the two genes are linked and present on the same chromosome

Description : What is the difference between a dominant and recessive trait?

Last Answer : A: A dominant trait is a genetic trait that is expressed when present in either one or both copies of the gene, while a recessive trait is a genetic trait that is only expressed when present in both copies of the gene.

Description : What is the difference between a dominant and a recessive trait?

Last Answer : A: A dominant trait is expressed when an individual has one or two copies of the dominant allele, while a recessive trait is expressed only when an individual has two copies of the recessive allele.

Description : In order to have a recessive trait an organism must have what copies of he recessive allele?

Last Answer : What is the answer ?

Description : Was the recessive form of any trait more frequent than the dominant form Explain this result?

Last Answer : What is the answer ?

Description : If Parent 1 Ty crosses with Parent 2 Ty what percentage of offspring will display the recessive trait?

Last Answer : Need answer

Description : What is meant by recessive trait/factor?

Last Answer : The factor which remains hidden or concealed in the generations is called recessive trait/factor. Example: In the F2 generation, the factor for dwarfness remained hidden so it is called recessive factor.

Description : In autosomal recessive inheritance: a. the rarer the trait the higher the possibility of marriages within the same family b. most recessive gene defects cause problem through failure to produce functional protein c. both males and females are affected equally severely d. all above

Last Answer : all above

Description : Haemophilia is more common in males because it is a (a) recessive character carried by Y-chromosome (b) dominant character carried by Y-chromosome (c) dominant trait carried by X-chromosome (d) recessive trait carried by X-chromosome.

Last Answer : (d) recessive trait carried by X-chromosome

Description : The colour blindness is more likely to occur in males than in females because (a) the Y-chromosome of males have the genes for distinguishing colours (b) genes for characters are located on the sex- chromosomes (c) the trait is dominant in males and recessive in females (d) none of these.

Last Answer : (b) genes for characters are located on the sex- chromosomes

Description : Study the pedigree chart given below. What does it show? (a) Inheritance of a condition like phenylketonuria as an autosomal recessive trait. (b) The pedigree chart is wrong as this is ... disease like haemophilia. (d) Inheritance of a sex-linked inborn error of metabolism like phenylketonuria

Last Answer : (a) Inheritance of a condition like phenylketonuria as an autosomal recessive trait.

Description : Which one is the incorrect statement with regard to the importance of pedigree analysis? (a) It confirms that DNA is the carrier of genetic information. (b) It helps to understand whether the trait in ... linked to one of the autosome. (d) It helps to trace the inheritance of a specific trait.

Last Answer : (a) It confirms that DNA is the carrier of genetic information.

Description : Select the correct match. (a) Haemophilia – Y linked (b) Phenylketonuria – Autosomal dominant trait (c) Sickle cell anaemia – Autosomal recessive trait,chromosome -11 (d) Thalassemia – X linked

Last Answer : (c) Sickle cell anaemia – Autosomal recessive trait,chromosome -11

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

Description : $ A cross between the pure recessive parent and the F-1 offspring is called Test cross. ! Test cross is a type of Back cross.

Last Answer : $ A cross between the pure recessive parent and the F-1 offspring is called Test cross. ! Test cross is a ... is wrong D. If both As and R are wrong.

Description : A cross between homozygous recessive and heterozygous plant is - (1) Back cross (2) Test cross (3) Monohybrid cross (4) Dihybrid cross

Last Answer : (2) Test cross Explanation: A cross between homozygous recessive and heterozygous plant is called Test Cross

Description : A cross between homozygous recessive and heterozygous plant is (1) Back cross (2) Test cross (3) Monohybrid cross (4) Dihybrid cross

Last Answer : Test cross

Description : In a genetic cross having recessive epistasis, F2 phenotypic ratio would be (a) 9 : 6 : 1 (b) 15 : 1 (c) 9 : 3 : 4 (d) 12 : 3 : 1.

Last Answer : (c) 9 : 3 : 4

Description : Who wrote The History of Mr Polly?

Last Answer : H G Wells

Description : What are Three words to describe aunt Polly?

Last Answer : Need answer

Description : Is there a female attorney in my area with the first name of Polly?

Last Answer : An income trust is an investment that holds assets that produce an income.

Description : Who wrote The History of Mr Polly

Last Answer : H G Wells

Description : RR (Red) Antirrhinum is crossed with white (WW) one. Offspring RW are pink. This is an example of (a) dominant-recessive (b) incomplete dominance (c) hybrid (d) supplementary genes.

Last Answer : (b) incomplete dominance

Description : In fruit flies long wings are dominant to short wings. Cross a heterozygous long winged fruit fly with another heterozygous long winged fruit fly. what are the expected genotype and phenotype ratios?

Last Answer : Need answer

Description : If you made a Punnett square showing Gregor Mendel's cross between true-breeding tall plants and truebreeding short plants, the square would show that the offspring had a. the genotype of one of the ... . a genotype that was different from that of both parents. d. the genotype of both parents.

Last Answer : c. a genotype that was different from that of both parents.

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.

Description : In mendels monohybrid cross of purebred white flowered plant and purebred purple flowered plant the F1 generation?

Last Answer : Need answer

Description : Which idea is depicted by a cross in which the F1 generation resembles both the parents? (a) Inheritance of one gene (b) Co-dominance (c) Incomplete dominance (d) Complete dominance

Last Answer : (b) Co-dominance

Description : Haploids are able to express both recessive and dominant alleles/mutations because there are (a) many alleles for each gene (b) two alleles for each gene (c) only one allele for each gene in the individual (d) only one allele in a gene.

Last Answer : (c) only one allele for each gene in the individual