20 !

a gene with the sequence attcattca underwent duplication after a few generations. which sequence represents this gene after the mutation?

a. attcattca
b. acttactta
c. attcacattca
d. atccattca
e. atcattca

your answer is rna to the question.

the farther away the object is from the central star (the sun) it's gravitainal pull on the object is weaker when it is farther

explanation:

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.