Description : .Match the terms in column I with their description in column II and choose the correct option. Column I Column II A. Dominance (i) Many genes govern a single character B. Co-dominance (ii) In a heterozygous organism only one allele ... (i) (ii) (c) (ii) (i) (iv) (iii) (d) (ii) (iii) (iv) (i)
Last Answer : (d) (ii) (iii) (iv) (i)
Description : What are the regions associated with a particular phenotypic trait having polygenic effect called as? a. Junk DNA b. Alleles c. Quantitative trait loci d. Discrete variables
Last Answer : c. Quantitative trait loci
Description : What is Polygenic Inheritance ?
Last Answer : : Polygenic inheritance refers to the phenotypic traits found in a single inheritance formula that are controlled by two or more genes.
Description : Which one of the following pairs of features is a good example of polygenic inheritance?
Last Answer : Which one of the following pairs of features is a good example of polygenic inheritance? A. Human ... D. Human eye colour and sickle cell anaemia
Description : $ Inharitance of flower colour in mirabilis jalapa is type of polygenic inheritance. ! Polysomes are a type of chromosomes.
Last Answer : $ Inharitance of flower colour in mirabilis jalapa is type of polygenic inheritance. ! Polysomes are a type ... wrong D. If both As and R are wrong.
Description : A polygenic inheritance in human beings is (a) skin colour (b) phenylketonuria (c) colour blindness (d) sickle cell anaemia
Last Answer : (a) skin colour
Description : . Which one of the following is an example of polygenic inheritance? (a) Skin colour in humans (b) Flower colour in Mirabilis jalapa (c) Production of male honeybee (d) Pod shape in garden pea
Last Answer : (a) Skin colour in humans
Description : Inheritance of skin colour in humans is an example of (a) point mutation (b) polygenic inheritance (c) codominance (d) chromosomal aberration.
Last Answer : (b) polygenic inheritance
Description : Which of the following characteristics represent ‘inheritance of blood groups’ in humans? (i) Dominance (ii) Co-dominance (iii)Multiple allele (iv) Incomplete dominance (v) Polygenic inheritance (a) (ii), (iii) and (v) (b) (i), (ii) and (iii) (c) (ii), (iv) and (v) (d) (i), (iii) and (v)
Last Answer : (b) (i), (ii) and (iii)
Description : Mendel’s last law is (a) segregation (b) dominance (c) independent assortment (d) polygenic inheritance.
Last Answer : (c) independent assortment
Description : Which of the following characteristics represent 'Inheritance of blood groups' in humans ? a. Dominance b. Co-dominance c. Multiple dominance d. Incomplete dominance e. Polygenic inheritance (1) b, c and e (2) a, b and c (3) b, d and e (4) a, c and e
Last Answer : (2) a, b and c
Description : A cross of a red cow (RR) with a white bull (WW) produces all roan offspring (RRWW). This type of inheritance is known as a. incomplete dominance. b. polygenic inheritance. c. codominance. d. multiple alleles.
Last Answer : c. codominance.
Description : Situations in which one allele for a gene is not completely dominant over another allele for that gene are called a. multiple alleles. b. incomplete dominance. c. polygenic inheritance. d. multiple genes.
Last Answer : b. incomplete dominance.
Description : The animals of cold countries have relatively shorter and poorly developed ears, eyes, hairs and other phenotypic characters. This is known by which law? (a) Cope’s Law (b) Dollo’s Law (c) Allen’s Law (d) Bergamann’s Law
Last Answer : (c) Allen’s Law
Description : Do you think Mendel's law of inheritance would have been different if the characters that he chose were located on the same chromosome? -Biology
Last Answer : If Mendel choose characters that were located on the same chromosome then Mendel would not find the law of independent assortment.
Description : $ Schleiden and Schwann formulated the theory of inheritance of characters. ! The non living matter also follows the laws of inheritances.
Last Answer : $ Schleiden and Schwann formulated the theory of inheritance of characters. ! The non living matter also follows ... D. If both As and R are wrong.
Description : The Theory of Inheritance of Acquired Characters for the origin of species was proposed by: (a) Jean Lamark (b) J.B.S. Haldane (c) August Weismann (d) Harold Urey
Last Answer : Ans:(a)
Description : Which of the following is not a part of the Darwin's theory of evolution? (1) Natural selection (2) Struggle for existence (3) Survival of the fittest (4) Inheritance of acquired characters
Last Answer : (4) Inheritance of acquired characters Explanation: The inheritance of acquired characteristics is a hypothesis that physiological changes acquired over the life of an organism such as the ... theory of adaptation equated with the evolutionary theory of French naturalist Jean-Baptiste Lamarck.'
Description : The theory of inheritance of acquired characters was propounded by - (1) Charles Darwin (2) Gregor Mendel (3) J. B. Lamarck (4) Weismann
Last Answer : (3) J. B. Lamarck Explanation: Lamarckism (or Lamarckian inheritance) is the hypothesis that an organism can pass on characteristics that it has acquired through use or disuse during its lifetime to its offspring.
Description : Which of the following is not a part of Darwinism? A. Over production (Answer) B. Natural selection C. Inheritance for acquired characters D. Competition for survival E. None of these
Last Answer : A. Over production (Answer)
Description : Darwin's theory of pangenesis shows similarity with theory of inheritance of acquired characters then what shall be correct according to it? (a) Useful organs becomes strong and developed while useless ... organs is due to will power. (d) There should be some physical basis of inheritance.
Last Answer : There should be some physical basis of inheritance
Description : The theory of inheritance of acquired characters are proposed by a. J.B. Lamarck b. Charles Darwin c. Gregor Mendel d. Hugo De vries
Last Answer : b. Charles Darwin
Description : Which of the following is not a part of the Darwin’s theory of evolution? (1) Natural selection (2) Struggle for existence (3) Survival of the fittest (4) Inheritance of acquired characters
Last Answer : Inheritance of acquired characters
Description : Difference between phenotypic ratio and genotypic ratio. -Biology
Last Answer : answer:
Description : Causes of phenotypic variation. -Biology
Description : What is the phenotypic ratio of a monohybrid cross? -Biology
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 : Polygenic genes show: (a) Different phenotype (b) Different genotype (c) Similar phenotype (d) Similar genotype
Last Answer : Ans. ((a))
Description : The polygenic genes show (a) different karyotypes (b) different genotypes (c) different phenotypes(d) none of these.
Last Answer : (c) different phenotypes
Description : The process by which organisms with different evolutionary history evolve similar phenotypic adaptations in response to a common environmental challen
Last Answer : The process by which organisms with different evolutionary history evolve similar phenotypic ... Convergent evolution D. Non-random evolution
Description : What are the genotypic and phenotypic ratios of the F2?
Description : How does incomplete dominance differ from complete dominance in it's phenotypic expression?
Last Answer : In complete dominance, only one allele in the genotype is seen in the phenotype. In codominance, both alleles in the genotype are seen in the phenotype. In incomplete dominance, a mixture of the alleles in the genotype is seen in the phenotype.
Description : If a dwarf pea plant was treated with gibberellic acid, it became as tall, as tall pea plants. If these pea plants are crossed with pure tall pea plants, what will be the phenotypic ratio in F1 generation? ... (b) 50% tall and 50% dwarf plants (c) 75% tall and 25% dwarf plants (d) 100% tall plants
Last Answer : Ans. ((d))
Description : Phenotypic ratio of Dicross hybrid
Last Answer : Ans. 9:3:3:1
Description : Phenotypic ratio of Monocross hybrid
Last Answer : Ans. 3:1
Description : Which of the following statements regarding endothelial cells in acute inflammation are true? a. Endothelial cells are characterized by phenotypic homogeneity b. Specific patterns of receptor expression ... blood flow and leukocyte adhesion d. Endothelial cells may be capable of phagocytosis
Last Answer : Answer: b, c, d Endothelial cells are increasingly recognized to be phenotypically heterogeneous. Specific receptor molecules are expressed at various sites where they help to direct lymphocytes and ... rather, they possess the ability to direct and focus many aspects of an inflammatory event
Description : Write the phenotypic ratio of monohybrid cross.
Last Answer : 3:1 (3 tall & 1 dwarf)
Description : The process by which organisms with different evolutionary history evolve similar phenotypic adaptations in response to a common environmental challenge, is called (a) non-random evolution (b) adaptive radiation (c) natural selection (d) convergent evolution.
Last Answer : (d) convergent evolution
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 : F2 generation in a Mendelian cross showed that both genotypic and phenotypic ratios are same as 1 : 2 : 1. It represents a case of (a) co-dominance (b) dihybrid cross (c) monohybrid cross with complete dominance (d) monohybrid cross with incomplete dominance.
Last Answer : (d) monohybrid cross with incomplete dominance.
Description : According to Hugo de Vries, the mechanism of evolution is :- (1) Multiple step mutations (2) Saltation (3) Phenotypic variations (4) Minor mutations
Last Answer : (2) Saltation
Description : F2 generation in a Mendelian cross showed that both genotypic and phenotypic ratios are same as 1 : 2 : 1. It represents a case of (1) Monohybrid cross with incomplete dominance (2) Co-dominance (3) Dihybrid cross (4) Monohybrid cross with complete dominance
Last Answer : (1) Monohybrid cross with incomplete dominance
Description : In the secondary culture, cells are obtained from a. primary culture b. the organism c. organ culture d. phenotypic culture
Last Answer : a. primary culture
Description : What phenotypic and genotypic ratios are expected in F2 generation when monohybrid and dihybrid crosses are made?
Last Answer : Ans: Monohybrid cross : Phenotypic ratio is 3:1 and Genotypic ratio 1:2:1. Dihybrid cross : Phenotypic ratio 9:3:3:1. Genotypic ratio is 1:2:2:4:1:2:1:2:1
Description : Who had proposed the chromosomal theory of the inheritance? -Biology