3. A dragonfly has blue wings. Its mother has blue wings, but its father has colorless wings. Which of these statements explains why the dragonfly has blue wings?
a
The dragonfly inherited one copy of the gene for wing color from its mother and one copy
from its father. That gene combination instructs for proteins that connect in ways that
make its wings blue.
b
The dragonfly inherited one copy of the gene for wing color from its mother and one copy
from its father. Those genes connect together to make its wings blue.
с
The dragonfly inherited its copies of the gene for wing color from its mother and not from
its father. Those genes connect together to make its wings blue.
d
The dragonfly inherited its copies of the gene for wing color from its mother and not from
its father. Just like its mother's genes, those genes instruct for proteins that connect in
ways that make its wings blue. Scroll for more
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endo:

regulates body hormones, aldosterone, vasopressin

neural:

signal, regulates body using electric signals, reflex

endo has to do with hormones; aldosterone and vasopressin are both hormones. i also had this question and got it right : d

the three components of a nucleotide are the nitrogenous base, the phosphate group and the five-carbon sugar.

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.

answer >   yes we do, women; have three holes, urethral opening(pee hole, vagina, and the women pee/girls pee out of the urethra like the men do; only they have a single opening to pee/ejaculate.   (sorry if i'm too forward with this, but this is for a biology class, isn't it? )

hope that !         : )