Respuesta :
Answer:
B The progeny of a cross between two different lizard species fail to develop properly.
Explanation:
Two different species cannot interbreed to produce fertile offspring due to biological barriers known as mechanisms of reproduction isolation.
These barriers are broadly classified as pre and postzygotic. Prezygotic barriers include the following:
- Habitat isolation: Two species occupy entirely different and distant habitats.
- Temporal isolation: Two species procreate at different times of the year.
- Behavioral isolation: Two species exhibit different mating behaviors.
- Gametic isolation: The gametes of the two species cannot fertilize.
- Mechanical isolation
Option B states an example of post-zygotic barriers. The two different species of lizards have mated, but their progeny will either face severe developmental issues and/or be sterile.
A prezygotic genetic isolating mechanism is a prevention method that discourages the fertilization of eggs. It includes isolation methods to prevent the fertilization of the egg by sperms.
The progeny of a cross between two different lizard species fail to develop properly is not an example of isolating mechanism:
The isolation mechanism can be explained as:
- The species of two different breeds cannot fertilize and produce zygotes as they are separated by biological boundaries and is an example of reproductive isolation.
Prezygotic isolation includes the following barrier:
- Behavioural isolation: Different species have distinct mating conducts.
- Temporal behaviour: The procreation time of different species varies.
- Habitat behaviour: Species varies in their habitats and are found in their particular territories.
- Gametic isolation: the gametes produced by species and their fertilization process are different.
Therefore, option B is not an example.
Learn more about prezygotic genetic isolating mechanisms here:
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