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The accepted concepts for the theory of Natural Selection does not include
Atendency for organisms to over produce
Bstruggle for existence
Csurvival of the fittest
Duse and disuse of body parts
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Question 442
waec2008
Which of the following occurrences cannot be taken as a direct observation of natural Selection in recent times?
AIndustrial melanism in moths
BSelective breeding in cattle
CInsecticide resistance of some mosquitoes
DDevelopment of long necks in giraffes
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Question 443
waec2008
Which of the following statements is not true of the worker termite? They
ABuild and repair nest
Bproduce enzymes to digest cellulose
Csearch for food to feed the colony
Dlook after the nymph
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Question 444
waec2008
If red is dominant to white and homozygous red pea-plants are crossed with homozygous white pea-plants, the first filial generation will have
Ared flowers, 2 white flowers
B4 red flowers
Cwhite flowers
D4 pink flowers
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Question 445
waec2008
The resemblance of a palatable insect to a poisonous insect is an example of
Aa chemical deterrent to a predator
Ban escape from the predator camouflage
Can escape from the predator by mimicry
Da defense against the predator by warming coloration
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Question 446
waec2008
Which of the following diseases is commonly observed in human males and is sex-linked?
ABeriberi
BDown’s syndrome
CSickle-cell anaemia
Dcolour blindness
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Question 447
waec2008
What of the following occurrences is not a feature of meiosis?
AFormation of four haploid cells
BTwo successive nuclear cell division
CPairing of homologous chromosomes at prophase
DFormation of two diploid cell
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Question 448
waec2008
What does the chemical composition of the genetic material of all living organisms consist of?
ADeoxyribonucleic acid
BAdenosine diphosphate
CAdenosine triphosphate
Dfollicle stimulating hormone,
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Question 449
waec2008
The effective cells involved in sickle-cell anaemia disease are
Aphagocytes
Blymphocytes
Cerythrocytes
Dthrombocytes
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Question 450
waec2008
The sudden change in a gene structure or chromosome number in an organism likely to cause an inheritable change in the phenotype is known as
Amigration
Bmutation
Cmitosis
Dmeiosis
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Question 451
waec2008
The observable characteristics of an individual usually resulting from the interaction between the gene composition and the environment is referred to as
Aallele
Bgenotype
Cphenotype
Dchromosome
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Question 452
waec2008
Which of the following human traits in a class of school children may give an approximate normal distribution curve when the variation is plotted?
ABlood groups
BEar shapes
CSex distribution
DHeights
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Question 453
waec2008
Which of the following characters is not an example of discontinuous variation?
ASkin color
BFingerprint
CAbility to roll tongue
DSex type
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Question 454
waec2008
Which of the following statements about phenylthiocarbamide (PTC) is not correct?
ASome people BHG the taste of PTC to be bitter
BOthers find this substance to be tasteless
CAbility to taste this chemical is inheritable
DAbility to taste the chemical is hot inheritable
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Question 455
waec2008
Which of the following substances is not recycled in an ecosystem?
ACarbon
BEnergy
CWater
DNitrogen
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Question 456
waec2008
Conservation may be promote by
Aencouraging tree planting
Bsystematic deforestation
Covergrazing of pastures
Dunabated bush timing
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Question 457
waec2008
To avoid over fishing in a lake, the following measures may be helpful except
Alimiting fishing periods
Bregulating the size of nets
Cfishing throughout the year
Dfish breeding exercise
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Question 458
waec2008
Many diseases caused by bacteria can be treated and cured by using
Aantiseptics
Bantibiotics
Cantigens
Dantibodies
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Question 459
waec2008
Which of the following activities constitutes biological control?
AA small bony fish transported on the back of a shark
BAdding manure to crops in a garden
CTilapia feeding on the larvae and pupae of mosquito
DA vulture feeding on the carcass of a goat
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Question 460
waec2008
A vaccine is introduced into a person‘s body to
Adestroy all disease-causing organisms in the body
Bstimulate the body to produce antibodies
Cenhance the production of red blood cells
Disolate disease-causing pathogens from the blood.
