In which of the following human sex abnormallies are those affected recognized as females but are poorly developed?
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Which of the following conditions is produced by Trisomy-21 in man?
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Mendel discovered that the F1 generation of a cross between a brown cock and a white cock were all brown because the gene for the :
A. white colour was dominant
B. brown colour was recessive
C. white colour was recessive
D. brown colour was dominant
Answer: D
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____ found that somatic cells of female grasshopper contain 24 chromosomes while male cells contain 23 chromosomes
A. Ashby Turner
B. Clarence Erwin McClung
C. Hermann Henking
D. Edmund Beecher Wilson
Answer: B
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____ is a sex influenced trait in males.
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Which of the following is a sex chromosomal aberation?
A. Turners syndrome
B. Riters syndrome
C. Klinefelters syndrome
D. None of the above
Answer: C
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The following are assumptions of quantitative inheritance except _____.
A. The environment exerts pressure on the genotype
B. There is no epitasin
C. There is no linkage among the loci controlling the trait
D. The environment exerts no effect on the genotype
Answer: A
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The probability of the simultaneous occurrence of two or more events is equal to ____ of their individual occurrences.
A. Sum of the probabilities
B. Half of the probabilities
C. Product of the probabilities
D. None of the above
Answer: C
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A homozygous genotype is ____.
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In Mendels laws of inheritance, F means __.
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