Urgent: when homologous chromosomes match up they form a structure called

diploid
tetrad
somite
gamete

~Hello there!

Your question: When homologous chromosomes match up they form a structure called .

Your  When homologous chromosomes match up they form a structure called

A tetrad!

Any questions ^?

Happy Studying!

Ithink you should go back and learn in school rather then here asking questions

The open ocean begins at the low-tide mark and extends to the end of the continental shelf

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.