Which of the following does not occur during the embryonic stage? a. the bones become fully developed. b. the tail begins to recede. c. the heart, brain, and spinal cord develop. d. the eyes and ears begin to form.

Answer;

The bones are fully formed

-This dose not occur during the embryonic stage.

Explanation;

-Embryonic stage is a stage of development which is a period after implantation, during which all the major organs and structures within a growing fetus are formed. For example, the tail begins to recede, the heart, brain, and spinal cord develop and also the eyes and ears begin to form among other events.

-The embryonic stage lasts from implantation up to around 8 weeks from the time of conception.

A.)  The bones become fully developed.

Explanation:

on edg its right took test.

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."

21 stacks

step-by-step explanation:

divide 630/30

21 stacks

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