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 : What evolutionary adaptations helped plants succeed and spread on land?
Last Answer : Vascular tissue and seeds
Description : The response of different organisms to the environmental rhythms of light and darkness is called (a) vernalization (b) photoperiodism (c) phototaxis (d) phototropism.
Last Answer : b) photoperiodism
Description : Evolutionary history of a group of organisms is called `:`
Last Answer : Evolutionary history of a group of organisms is called `:` A. Phylogeny B. Ancestry C. Palaeontology D. Ontogeny
Description : How does the length of the history of life help to explain the evolutionary events of single-celled organisms to complex multicellular organisms like mammals?
Last Answer : Not sure
Description : Biosystematics aims at (a) the classification of organisms based on broad morphological characters (b) delimiting various taxa of organisms and establishing their relationships (c) the ... (d) identification and arrangement of organisms on the basis of their cytological characteristics.
Last Answer : (b) delimiting various taxa of organisms and establishing their relationships
Description : Organisms can modify their response to an environmental stress is called a) Dormancy b) adaptation c) behavior d) isolation
Last Answer : b) adaptation
Description : Which of the following terms describes the study o animal behavior based on comparisons, the observation of patterns, and the consideration of environmental adaptations? Is it: a) ethology (pron: eh-thol-eh-gee) b) evisceration (pron: eh-vis-eh-ray-shun) c) promotorism d) sociology
Last Answer : ANSWER: A -- ETHOLOGY
Description : Which of the following types of channels moves data relatively slowly? a. wide band channel b. voice band challen c. narrow band channel
Last Answer : narrow band channel
Description : is the Objective of the energy management from the following :- a) To give each product a label b) To evolve minimum energy consumption c) To minimize environmental effects d) To achieve optimum energy procurement
Last Answer : To evolve minimum energy consumption
Description : Why did we evolve feelings when other organisms supposedly didn't, according to currently accepted explanations?
Last Answer : Im not sure how you can say other organisms dont have feelings? You dont think a dog, cat or any other animal for that matter can feel happy or sad? Loved or abandoned?
Description : First organisms to evolve on the earth were :
Last Answer : First organisms to evolve on the earth were : A. saprotrophs B. autotrophs C. heterotroph D. Plants
Description : Which one of the following categories of organisms do not evolve oxygen during Photosynthesis
Last Answer : Which one of the following categories of organisms do not evolve oxygen during Photosynthesis A. Red ... plants with Kranz anatomy D. Blue green algae
Last Answer : Which one of the following categories of organisms do not evolve oxygen during ... Photosynthetic green algae D. Photosynthetic bacteria
Description : Atopic allergic disorders are characterized by a) a hereditary predisposition. Atopic allergic disorders are characterized by a hereditary predisposition and production of a local reaction to IgE ... of a local reaction to IgE antibodies produced in response to common environmental allergens.
Last Answer : a) a hereditary predisposition. Atopic allergic disorders are characterized by a hereditary predisposition and production of a local reaction to IgE antibodies produced in response to common environmental allergens.
Description : The study of homologous structures in mature organism provides evidence for the evolutionary relationships among certain groups of organisms. Which fi
Last Answer : The study of homologous structures in mature organism provides evidence for the evolutionary ... Biochemistry C. Geology D. Comparative anatomy
Description : $ Classification based on the evolutionary relationships among the organisms is called phylogenetic classification. ! According to Binomila Nomenclatu
Last Answer : $ Classification based on the evolutionary relationships among the organisms is called phylogenetic classification. ! ... If both As and R are wrong.
Description : Evolutionary relationships between groups of organisms are determined using which of Thefollowing type of information? A- Comparisons of nucleotide sequences B- .Comparisons of biochemical pathways C- Comparisons of structural features D- All of the above
Last Answer : All of the above
Description : 7. Links between organisms that show branching pattern of evolutionary relationships are shown by_____. a) living fossils b) comparative embryology c) phylogenetic trees d) two fossil layers
Last Answer : c) phylogenetic trees
Description : Homozygous refers to: a) similar types of chromosomes b) having similar functions on an evolutionary basis c) particles in solution that are inseparable d) having identical alleles for a given gene
Last Answer : ANSWER: D -- HAVING IDENTICAL ALLELES FOR A GIVEN GENE
Description : The evolutionary history of an organism is known as
Last Answer : The evolutionary history of an organism is known as A. Ontogeny B. Phylogeny C. Ancestry D. Paleontology
Description : The most apparent change during the evolutionary history of Homo-sapients is traced in
Last Answer : The most apparent change during the evolutionary history of Homo-sapients is traced in A. Walking upright B ... in the brain size D. Loss of body hair
Description : Which of the following is correct order of the evolutionary history of man?
Last Answer : Which of the following is correct order of the evolutionary history of man? A. Peking man, ... man, Neaderthal man, Homo sapiens, Heidelbrg man
Description : Which of the following is correct order of the evolutionary history of man? (a) Peking man, Homo sapiens, Neanderthal man, Cromagnon man (b) Peking man, Heidelberg man, Neanderthal man, Cromagnon ... man, Homo sapiens, Cromagnon man (d) Peking man, Neanderthal man, Homo sapiens, Heidelberg man
Last Answer : (b) Peking man, Heidelberg man, Neanderthal
Description : Difference between phenotypic ratio and genotypic ratio. -Biology
Last Answer : answer:
Description : In polygenic inheritance phenotypic characters are determined by -Biology
Description : Causes of phenotypic variation. -Biology
Description : What is the phenotypic ratio of a monohybrid cross? -Biology
Description : What are the genotypic and phenotypic ratios of the F2?
Last Answer : Need answer
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 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 : 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 : 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 : 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 : If cigarette manufacturers were to lobby Parliament to get restrictions on cigarette advertising eased, their environmental response would best be described as: A)passive B)reactive C)proactive D)conservative E)dominant
Last Answer : C)proactive
Description : Which of the following problems is most likely to occur in a matrix structure? (a) Decreased employee motivation ; (b) Employees receiving conflicting directives (c) Decreased response to environmental change ; (d) Decreased coordination
Last Answer : (b) Employees receiving conflicting directives
Description : What Structural features with a common evolutionary origin?
Last Answer : Feel Free to Answer
Description : Phylogenetic classification is one which is based on (a) overall similarities (b) utilitarian system (c) habits of plants (d) common evolutionary descent
Last Answer : (d) common evolutionary descent.
Description : What Process adaptions are required if the prototype will evolve into deliverable system or product?
Last Answer : What process adaptations are required if the prototype will evolve into a deliverable system or product?
Description : How would you increase the yield of maize crop? (a) Evolve high yielding varieties of seeds to suit different agroclimatic regions (b) Develop high yielding varieties (c) Develop disease-resistant varieties (d) Develop early and very early maturing varieties suitable for rainfall areas
Last Answer : Ans: (a)