Answer:
The correct answer will be option- synaptonemal complex.
Explanation:
The tetrad arrangement of the genetic material in an organism is mediated by a highly conserved structure known as the synaptonemal complex. The synaptonemal complex is formed during the prophase I of the meiosis I which attaches the chromatin of the homologous chromosomes.
The synaptonemal complex is a proteinaceous structure which is formed by the two lateral ladders like elements with a central portion composed of the central element. The chromatin gets attached to the lateral elements while the central a portion bridge space between the two ladders thus help in the formation of the tetrad.
Thus, option- synaptonemal complex is the correct answer.
conduct research on the types of organisms that live in the ecosystem you choose -
Ecosystems, or biological communities, comprise both living organisms such as animals, plants, insects, and microorganisms and nonliving components such as rocks, soil, water, and sunshine.
- Producers are plants and algae that manufacture their own sustenance.
- Herbivores eat plants and are classified as main consumers.
- Secondary consumers are carnivores that devour herbivores at the third level.
- Tertiary consumers are predators that consume other carnivores.
To learn more about ecosystem from the given link
brainly.com/question/15971107
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Their valency is one and both belong to the third period
I think the answer to this is abyssal plane