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Which of the following traits in humans in an example of continuous variation?
A gene is described as recessive when it
The unit of heredity found in the chromosomes is
Which of the following characters in humans is sex-linked?
A man heterozygous for sickle cell trait marries a woman of the same genotype. What percentage of their children would have sickle cell?
Which of the following groups of characteristics in humans is classified as phenotype?
People with sickle cell suffer from anaemia because
Which of the following statements about a dominant gene is correct? It
In blood transfusion, a person with blood group O can receive blood from a person with blood group
An example of discontinuous variation in human population is
One of the factors to be considered for safe blood transfusion is
In which of the following parts of the digestive system does peristalsis occur?
Which of these rocks can be referred to as the mother rock?
The structure in the human ear which is responsible for the balancing of the body is
One characteristic of the troposphere is the presence of
Which of the following radiations is positively charged
The following sources of energy are renewable except
Which of the following vitamins is not fat soluble?
The act of mating in the domestic fowl is termed
Different forms of the same age gene are referred to as