NEED ANSWERED ASAP A three letter base sequence on a mRNA molecule called a translates for a particular amino acid.

Plz will mark! the diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Read each description below and determine to which stage of sleep each pertains. then click and drag each box into the appropriate category below.

10. in which phase will crossing-over occur? a. mitosis b. metaphase ii c. prophase i d. meiosis ii