(a) - Caecum
- Nictating membrane
- Appendix
- Tail/ reduce coccyx
- Human body hair
- Ear muscle
(b) They have gene for resistance which is acquired through mutation. when bacteria are exposed to antibiotics for some time, They become used or adapted to living in presence of the drug. The gene is passed to the offsprings therefore establishing a population of drug resistant.
johnmulu answered the question on May 19, 2017 at 05:17
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Explain the theory of evolution by natural selection.
(Solved)
Explain the theory of evolution by natural selection.
Date posted:
May 19, 2017
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Answers (1)
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State the importance of divergent evolution to organisms.
(Solved)
State the importance of divergent evolution to organisms.
Date posted:
May 19, 2017
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Answers (1)
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Explain how comparative embryology is an evidence for organic evolution.
(Solved)
Explain how comparative embryology is an evidence for organic evolution.
Date posted:
May 19, 2017
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Explain continental drift as an evidence of evolution.
(Solved)
Explain continental drift as an evidence of evolution.
Date posted:
May 13, 2017
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State two advantages of natural selection to organisms.
(Solved)
State two advantages of natural selection to organisms.
Date posted:
May 13, 2017
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Answers (1)
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(Solved)
State three pieces of evidence that support theory of evolution
Date posted:
May 13, 2017
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Answers (1)
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(Solved)
Give a reason why it is only mutation in genes of gametes that can influence evolution.
Date posted:
May 13, 2017
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State two advantages of hybrid vigour.
(Solved)
State two advantages of hybrid vigour.
Date posted:
May 13, 2017
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State three structural differences between DNA and RNA.
Date posted:
May 13, 2017
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Answers (1)
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Differentiate between phenotype and genotype as used in genetics
(Solved)
Differentiate between phenotype and genotype as used in genetics
Date posted:
May 13, 2017
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Answers (1)
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State two advantages of hybrid vigour
(Solved)
State two advantages of hybrid vigour
Date posted:
May 13, 2017
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Answers (1)
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Give an example of a sex-linked trait in humans on:
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
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Answers (1)
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State two characteristics that researchers select in breeding programme.
(Solved)
State two characteristics that researchers select in breeding programme.
Date posted:
May 13, 2017
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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
(Solved)
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
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Date posted:
May 13, 2017
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Answers (1)
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Name three types of chromosomal mutations.
(Solved)
Name three types of chromosomal mutations.
Date posted:
May 13, 2017
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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
(Solved)
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
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Answers (1)
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State the function of Deoxyribonucleic acid (DNA) molecule.
(Solved)
State the function of Deoxyribonucleic acid (DNA) molecule.
Date posted:
May 12, 2017
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State three factors that contribute to the deceleration phase in the population phase in the population curve of an organism.
(Solved)
State three factors that contribute to the deceleration phase in the population phase in the population curve of an organism.
Date posted:
May 12, 2017
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(Solved)
What is seed dormancy?
Date posted:
May 12, 2017
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(Solved)
State three roles of auxins in a plant stem.
Date posted:
May 12, 2017
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Answers (1)