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Quiz 25
Mdcat-past-papers - UHS - Biology Quiz
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Board: UHS | Subject: Biology |
481. The actual or preserved remains of the organisms that lived in the ancient past are called:
fossils
impression
ancient prints
ancient cast
482. Divergent evolution produces:
Vital organs
homologous organs
Vestigial organ
Analogous organs
483. Which of the following type of organs are supposed to be functional in ancestral species rather than in present day species:
Vestigial organs
Analogous organs
Homologous organs
Embryonic
484. Which of the following is not an example of disuse of organs?
Snake legs
Muscle atrophy
Shedding of milk teeth
Movement of ear
485. According to the biogenetic law of Ernst Haeckel:
There is survival of the fittest
There is use and disuse of organs
Phylogeny recapitulates ontogeny
Ontogeny recapitulates phylogeny
486. The sex of individuals of next generation always depends on one of the parents who is:
Heterozygotic
Homozygotic
Isogametic
isomorphic
487. When a gene pair at one locus interacts with another gene at another locus,the interactions is called:
Dominance
Multiple alleles
Pleiotropy
epistasis
488. When a single gene affects two or more traits, the phenomenon is called:
Epistasis
Pleitropy
Dominance
Over Dominance
489. In men ,sex-determination depends upon the nature of:
Heterogametic male
Homogametic male
Heterogametic female
Homogametic male
490. Pure breeding lines of pea were taken regarding seed shape -round and wrinkled and were crossed with no intermediate b/w parents.All offspring found to be round. These results show:
Co-dominance
Incomplete Dominance
dominance over recessive
Over-Dominance
491. The condition in which the heterozygote has a phenotype intermediate b/w contrasting homozygous parents is called as:
Dominance
Incomplete dominance
Co-dominance
Over-Dominance
492. Locus stands for
Position of gene on homologous chromosome
Regions of chromosome
Close regions of same chromosome
Position of an allele within a DNA molecule
493. Chance of a Cross over between two loci is directly proportional to their
thickness
width
length
distance
494. Which of the following is multiple allelic character?
Color of flower in pea plant
Shape of seed in pea plant
blood group of human being
Length of stem in pea plant
495. When two or more alleles do not show complete dominance or both the alleles are expressing independently In heterozygote condition , such a condition is called
Complete Dominance
Over Dominance
Co Dominance
Incomplete Dominance
496. To study the sex linkages in the drosophila , Morgan mated white eyed males with wild type red eyed female, what will be the phenotype of offspring
All red eyed males and females
Red eyed females and white eyed males
White eyed females and red eyed males
All white eyed females and males
497. Only those Genes can assort independently whose loci are on
Same chromatids
Same chromosomes
Non-homologous chromosomes
Homologous chromosomes
498. Identify the correct pair of vestigial organ
Ear Muscles & Vermiform appendix
Heart & Liver
Ear muscles and liver
Vermiform appendix and heart
499. Which of the following increases variation within a gene pool
Chromosome inversion
Gene mutation
Crossing over
Random fusion of gametes
500. The formula calculating the frequency of genotype and alleles in a population gene pool is known as
Hardy-Weinberg Equation
Lamerc Equation
Darwin Equation
James Hutton Equation
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