Who worked on reduction division?
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Non disjunction is not the only cause of Downs syndrome.
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Most of the difficulties students experience in Genetics has to do with the fact that:
A. Genetics is a descriptive aspect of Biology unlike other aspects
B. Genetics entails logical reasoning involving some calculations
C. Genetics entails some psychological reasoning
D. Genetics entail substantial psychological reasoning
Answer: B
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The following are parallels between genetic and cytological facts except _______.
A. observation of dominant and recessive genes
B. observation of dominant and recessive genes
C. genes occur in pairs in diploid organisms
D. chromosomes occur in pairs in diploid organisms
Answer: A
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The F2 generation of a cross of two pure breeding parents (P) with two contrasting characters (tall and short) and tall is dominant over short is :
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The following statements are true of genes except ____.
A. Dominant genes are represented with small letter
B. Genes are found on the chromosomes
C. Genes occur in pairs in diploid organisms
D. Genes are hereditary factors
Answer: A
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Which of the following is an example of discontinuous variation?
A. The colour of pear plants grown in the dark
B. The adult body weight ranging from 50 kg-95 kg
C. The range in height of pea plant from 30 cm-50 cm
D. Offspring including two male cats and three female cats
Answer: D
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In an experiment, the F1 generation of a cross between a brown cock and a white cock were all brown because the gene for the ___.
A. brown colour was recessive
B. brown colour was dominant
C. white colour was recessive
D. white colour was dominant
Answer: B
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The following are parallels between genetic and cytological facts except ___.
A. genes occur in pairs in diploid organisms
B. chromosomes occur in pairs in diploid organisms
C. members of a gene pair separate during gamete formation
D. observation of dominant and recessive genes
Answer: D
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In a genetic experiment; AaBbCc x AaBbCc, how many genes are involved in this experiment?
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