Echinoderm is the name given to a member of the phylum Echinodermata. They have radial symmetry and this includes sea urchins, sand dollars, sea stars and sea cucumbers. It is suggested that they are related to the chordates which is the answer.
Answer:
The chromosomes are arranged in their respective homologous pairs. In humans, this displays 22 pairs of autosomes and 1 pair of sex chromosome.
Explanation:
Chromosomes that are similar in their size and shape and also display similar genetic traits and carry the same genetic information are paired together. These are known as homologous chromosomes. These chromosomes carry different variations of similar genes in them. In humans there are 46 chromosomes in total. These chromosomes are paired and form 23 homologous pairs. Among these 23 homologous pairs, 22 pairs are autosomes and one pair are the sex chromosomes which are either (XX or XY). The sex chromosomes determine the sex of an individual. XX chromosomes represent a female and XY chromosomes represent a male.
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Answer:
The cell membrane or plasma membrane is a biological and thin semi-permeable membrane that surrounds the cytoplasm of a cell
Explanation: