-Comparative anatomy;members of a phykum/group show similarities;organisms have similar structures performing the same function for example digestive system, urinary system.
-The pentadactyl limb.
-Analogous structures/different structures performing the same function.for example ,wings of insects.
-Fossil records/palaeontology;these are remains of organisms preserved in naturally occurring materials for many years;They show morphological changes of organisms over a long period of time for example skull of a man.
-Comparative anatomy;Vertebrate embryos are morphologically similar; suggesting that the organisms have a common origin.
-Geographical distribution; present continents are thought to have been a large land mass joined together; As a result of continental drift;isolation occurred bringing about different patterns of evolution.
-Comparative serology/comparative physiology; blood groups/rhesus factor.Antigen antibody reactions;reveal same relationship among common ancestry.
Belan answered the question on February 15, 2019 at 12:06
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Outline FOUR main stages of DNA replication.
(Solved)
Outline FOUR main stages of DNA replication.
Date posted:
February 15, 2019
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Answers (1)
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Two pieces of raw potato chips A and B were placed in two different solutions in petridishes and left to stand for thirty minutes. At...
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Two pieces of raw potato chips A and B were placed in two different solutions in petridishes and left to stand for thirty minutes. At the end of the experiment, A was soft and a bit shrivelled, B was turgid and had increased in size.
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(b)Account for the observations made in each case.
Date posted:
February 15, 2019
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Answers (1)
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In an experiment, a piece of brain was removed from a rat.It was later found that the rat had large fluctuation of body temperature. Suggest...
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In an experiment, a piece of brain was removed from a rat. It was later found that the rat had large fluctuation of body temperature. Suggest the part of brain which had been removed.
Date posted:
February 15, 2019
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Answers (1)
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Distinguish between:
(a)Genotype and phenotype.
(b)Haploidy and diploidy.
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Distinguish between:
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Date posted:
February 15, 2019
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Answers (1)
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Briefly explain the meaning of the term apical dominance.
Date posted:
February 15, 2019
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Answers (1)
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Explain why Lamarck's theory of inheritance was discarded.
Date posted:
February 15, 2019
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Answers (1)
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(Solved)
(a)Define respiration.
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Date posted:
February 15, 2019
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Answers (1)
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State the function of the deoxyribonuclei acid (DNA)molecule.
Date posted:
February 14, 2019
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Answers (1)
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(Solved)
State two roles of hydrochloric acid in the stomach.
Date posted:
February 14, 2019
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Differentiate between mechanical digestion and chemical digestion.
Date posted:
February 14, 2019
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List the main steps involved in nitrogen cycling in the order they occur naturally
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List the main steps involved in nitrogen cycling in the order they occur naturally.
Date posted:
February 13, 2019
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What is the role of variation in evolution?
Date posted:
February 8, 2019
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Why is mitochondria called power house of the cell?
Date posted:
February 8, 2019
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Where do thermoreceptors for internal body temperature occur?
Date posted:
February 6, 2019
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Discuss the main types of reproduction in Protists.
Date posted:
January 30, 2019
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Discuss the characteristics of protists basing your reference in microbiology.
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Discuss the characteristics of protists basing your reference in microbiology.
Date posted:
January 30, 2019
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Discuss the THREE main importance of Fungi as used in biotechnology.
Date posted:
January 30, 2019
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Discuss Rhizanova Tree Transplant under the following: (a)As a mychorrizal fungi inoculant. (b)Advantages of using it as an inoculant.
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Discuss Rhizanova Tree Transplant under the following:
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Date posted:
January 29, 2019
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Discuss the benefits of Mycorrhizae Inoculation.
(Solved)
Discuss the benefits of Mycorrhizae Inoculation.
Date posted:
January 29, 2019
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Answers (1)
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Discuss the main reasons why mycorrhizal fungi should be inoculated in the plants' roots
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Discuss the main reasons why mycorrhizal fungi should be inoculated in the plants' roots.
Date posted:
January 29, 2019
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Answers (1)