Answer:
They typically have a tough, spiny surface, which inspired their name (in Greek, echinos means “spiny” and derma means “skin”). They also have the unusual ability to regrow lost body parts, and sea stars and brittle stars can regrow arms if broken off or eaten
Explanation:
The human sperm and eggs contain 23 chromosomes. The type of cell division that produces gametes with half the normal chromosome number is called meiosis. It is used to produce cells for repair and asexual reproduction. Gametes do contain different genetic information to each other and to the parent cell.
It depends on how u do it. If it’s near an ocean, it can cause harm to sea animals, or on land, it can cause pollution, and kill land animals as well.
Answer:
d. UAC
Explanation:
An anticodon, present on tRNA, is the complementary sequence to a determined codon on the mRNA. tRNA is responsible for placing the aminoacids in the correct order when a protein is being translated, and it does so by complementary binding the codons on the mRNA. Each tRNA can hold a different aminoacid, so, for example, the codon AUG encodes the aminoacid methionine, and this means that only a tRNA that has an anticodon with the sequence UAC will be able to hold metionine and place it on its position on the protein sequence.
