Which of the following statements about the modifications of pentadactyl fore-limbs is not correct?
Wings are modified for flying in birds
Flippers are modified for grasping in sharks
Legs are modified for walking and running in antelopes
Arms are adapted for grasping and holding in human beings
Flippers are modified for swimming in whales
Correct answer is B
No explanation has been provided for this answer.
Adaptive radiation as illustrated by the variety of forms in insects can be regarded as
behavioral modification
a case of rapid population growth
a physiological process
an evidence of evolution
a population control mechanism
Correct answer is A
No explanation has been provided for this answer.
The precondition for blood tranfusion to an accident victim is
seeking the consent of his parents
ascertaining the religious belief of the victim
cross-matching the blood group of the donor with that of the accident victim
curing the donor of any disease traced in his blood
rewarding the donor with food and money
Correct answer is C
No explanation has been provided for this answer.
The genetic make-up of an organism is described as its
phenotype
genotype
character
chromosome
allele
Correct answer is B
No explanation has been provided for this answer.
A pair of genes that control a trait is described as?
dominant
recessive
allele
variant
hybrid
Correct answer is C
Alleles are different forms of the same gene that are located on the same part of the chromosome.
Alleles contribute to the organism's phenotype (the outward appearance of the organism).