• This is the making of identical copies of genes, DNA and whole organisms.
• Cloning is used in plants - that is tissue culture e.g. in development of various varieties of bananas and Eucalyptus trees.
• The first mammal to be cloned successfully was Dolly - the sheep.
• A nucleus from the cell obtained from the udder of the sheep was inserted in an unfertilized egg without a nucleus.
• This zygote was introduced into the uterus of a sheep and developed to full term.
Wilfykil answered the question on February 28, 2019 at 10:11
- Discuss baculoviruses as bio control agents(Solved)
Discuss baculoviruses as bio control agents
Date posted: February 25, 2019. Answers (1)
- Describe how the human kidneys are structurally adapted to perform their functions.(Solved)
Describe how the human kidneys are structurally adapted to perform their functions.
Date posted: February 24, 2019. Answers (1)
- (a)(i)Explain why skeletal muscles are said to be antagonistic.
(ii)State two characteristics of skeletal muscles.
(b)State the role of flexor muscle in movement.
(Solved)
(a)(i)Explain why skeletal muscles are said to be antagonistic.
(ii)State two characteristics of skeletal muscles.
(b)State the role of flexor muscle in movement.
Date posted: February 24, 2019. Answers (1)
- How are the following structures of a leaf adapted to their functions:
(i)Petiole?
(ii)Veins?
(iii)Palisade mesophyll?
(iv)Guard cells?(Solved)
How are the following structures of a leaf adapted to their functions:
(i)Petiole?
(ii)Veins?
(iii)Palisade mesophyll?
(iv)Guard cells?
Date posted: February 24, 2019. Answers (1)
- What are the stages of pathogenesis of diseases?(Solved)
What are the stages of pathogenesis of diseases?
Date posted: February 23, 2019. Answers (1)
- State the 2 types of micro organism and give their features.(Solved)
State the 2 types of micro organism and give their features.
Date posted: February 23, 2019. Answers (1)
- What are the clinical importance of micro organism?(Solved)
What are the clinical importance of micro organism?
Date posted: February 23, 2019. Answers (1)
- Explain how viruses differ from bacteria.(Solved)
Explain how viruses differ from bacteria.
Date posted: February 23, 2019. Answers (1)
- State the role of oxytocin in parturition.(Solved)
State the role of oxytocin in parturition.
Date posted: February 23, 2019. Answers (1)
- Name the two bones that articulate with the femur at its distal end.(Solved)
Name the two bones that articulate with the femur at its distal end.
Date posted: February 23, 2019. Answers (1)
- (a)With a reason,state the structure responsible for intermittent growth in an insect.
Structure.......
Reason......
(b)What is the hormone responsible for growth in an insect?(Solved)
(a)With a reason,state the structure responsible for intermittent growth in an insect.
Structure......
Reason......
(b)What is the hormone responsible for growth in an insect?
Date posted: February 23, 2019. Answers (1)
- State the causative agent and method of transmission of cholera.
(i)Causative agent......
(ii)Method of transmission.....(Solved)
State the causative agent and method of transmission of cholera.
(i)Causative agent......
(ii)Method transmission...
Date posted: February 23, 2019. Answers (1)
- Explain the role of intercoastal muscles in:
(i)Inspiration.
(ii)Expiration.(Solved)
Explain the role of intercostal muscles in:
(i)Inspiration.
(ii)Expiration.
Date posted: February 23, 2019. Answers (1)
- Explain the terms:
(i)Natural immunity.
(ii)Artificial immunity.(Solved)
Explain the terms:
(i)Natural immunity.
(ii)Artificial immunity.
Date posted: February 22, 2019. Answers (1)
- Name three plant tissues that are involved in support.(Solved)
Name three plant tissues that are involved in support.
Date posted: February 22, 2019. Answers (1)
- State the number of chromosomes found in human somatic cell.(Solved)
State the number of chromosomes found in human somatic cell.
Date posted: February 22, 2019. Answers (1)
- Name three main parts of an animal cell as seen under a light microscope.(Solved)
Name three main parts of an animal cell as seen under a light microscope.
Date posted: February 22, 2019. Answers (1)
- What is:
(i)Ichthyology.
(ii)Entomology.
(iii)Cytology.(Solved)
What is:
(i)Ichthyology.
(ii)Entomology.
(iii)Cytology.
Date posted: February 22, 2019. Answers (1)
- On a hot day the testis hang loosely in the scrotal sac while on a cold day they are held next to the body .Explain...(Solved)
On a hot day the testis hang loosely in the scrotal sac while on a cold day they are held next to the body. Explain the importance of this behaviour to humans.
Date posted: February 22, 2019. Answers (1)
- (A)How is mitochondria adapted to its function?
(B)(i)State which of the following organs has the highest number of mitochondria per cell;liver,kidney,stomach.
(ii)Give a reason for your answer...(Solved)
(A)How is mitochondria adapted to its function?
(B)(i)State which of the following organs has the highest number of mitochondria per cell: liver,kidney,stomach.
(ii)Give your answers in b(i)above.
Date posted: February 22, 2019. Answers (1)