18. Which types of mutations, positive, negative or neutral, are most likely to be seen in offspring

1 answer:

7 0

<h2>The following scenarios state whether the mutation is likely to be passed on to the offspring of the organism or not: </h2><h2> </h2>

a. A single bacteria cell contains a positive mutation in its DNA - The mutation is likely to pass as it is a unicellular organism with the cell itself containing the positive mutation.

b. A skin cell on a cat contains a positive mutation in its DNA - The mutation is not likely to pass as it is the skin cell.

C. A sperm cell in a whale contains a positive mutation in its DNA - The mutation is likely to pass as it is in the sperm.

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Protists originates from the Kingdom Protoctista. They comprise of organisms that are unicellular (Amoeba) or unicellular-colonial (volvox) in nature and which have no tisssues, therefore they are at the cellular level of organization.

Examples include, Amoeba, Paramecium, Euglena, Slime mold, Kelp, Diatoms, DInoflagellates. etc.

Some of them are also considered to be multicellular eukaryotes e.g slime molds, red algae etc. Eukaryotic organisms are organisms that possess cells containing a nucleus.

Characteristics in which protists exhibit varies from one species to the other.

For example, the mode of nutrition in eukaryotic algae are autotrophic in nature, in amoeba, they are gifted with pseudopods(false feets) in which they used to engulf prey(a term known as phagocytosis) therefore making them to be heterotrophic in nature.

In protist, locomotion varies from one organism to another. For example, in Amoeba , locomotion is achieved by extending and retracting pseudopods, Euglena are flagellated in nature , hence they move with the flagella. In Paramecium that are ciliated in nature, they move by propelling their cilia. etc.

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True.

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