- Resistance to diseases/ pest/ adverse weather conditions
- Increased yields
- Earlier maturity
johnmulu answered the question on May 13, 2017 at 07:00
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(b) State two causes of chromosomal mutations. (Solved)
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Date posted: May 13, 2017. Answers (1)
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(b) Give two examples of continuous variation in humans(Solved)
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Date posted: May 13, 2017. Answers (1)
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(b) What is a test-cross? (Solved)
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Date posted: May 13, 2017. Answers (1)
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Date posted: May 13, 2017. Answers (1)
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(b) Name two sex-linked traits in humans. (Solved)
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Date posted: May 13, 2017. Answers (1)
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Y - CHROMOSOME.
X - CHROMOSOME. (Solved)
Give an example of a sex-linked trait in humans on:
Y - CHROMOSOME.
X - CHROMOSOME.
Date posted: May 13, 2017. Answers (1)
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State two characteristics that researchers select in breeding programme.
Date posted: May 13, 2017. Answers (1)
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Tallness in pea plants is due to a dominant gene. Two tall pea plants were crossed and their F 1 generation were in the ratio of 3 tall: 1 short. using letter T to represents the gene for tallness and t for shortness give the
(a) (i) Genotype of the parents
(ii) Gamete of the parents
(iii) Genotype ratio of the F 1 generation
(b) What is meant by the term testcross in genetic studies?
Date posted: May 13, 2017. Answers (1)
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Name three types of chromosomal mutations.
Date posted: May 13, 2017. Answers (1)
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In a breeding experiment, plants with red flowers were crossed. They produced 123 plants with red flowers and 41 with white flowers
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Date posted: May 13, 2017. Answers (1)
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Date posted: May 12, 2017. Answers (1)
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Date posted: May 12, 2017. Answers (1)
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(b) State the importance of moulting to an insect. (Solved)
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Date posted: May 12, 2017. Answers (1)
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Date posted: May 12, 2017. Answers (1)
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Date posted: May 12, 2017. Answers (1)