The statement that is true about the homologous chromosomes of a pair is that they usually have the same genes at the same relative locations.
<h3>What are homologous chromosomes?</h3>
Homologous chromosomes are two chromosomes that are identical but not similar and contains the same genes.
Homologous chromosomes are usually in pairs that comes from both parents of an organism i.e. one from the mother and the other from the father.
The homologous chromosomes make the somatic cells of an organism diploid (2n) which separate only during the anaphase 1 stage of meiosis.
Therefore, the statement that is true about the homologous chromosomes of a pair is that they usually have the same genes at the same relative locations.
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Answer: Alexandrium catenella is a species of dinoflagellates. Alexandrium has two flagella that enable it to swim. While one flagellum encircles the cell causing the cell to rotate and move forward, the other extends behind the cell and controls the direction.
The cell wall is composed of cellulose Theca.
Length 20 - 48 μm, width 18 - 34 μm
Yellow-green to orange-brown
Forms chains of 2, 4 or 8 cells
Hi the answer you are looking for is option A)
Answer:
hydroshpere and biosphere
Explanation:
it contains
hydrosphere: cleaning of water
biosphere: helps plants and animals