The correct answer is
.Caribou have a thicker coat of fur and wider hooves.
The two sources of information used to direct the expression of genes during various stages of development are Transcription and Translation.
<h3><u>Explanation:</u></h3>
Both of them combined is called gene expression.Transcription is the process of sharing information stored in a DNA to RNA.
The process of translation is carried out in cytoplasm. Here, the mRNA, in which stands for messenger, send messages to a more complex and specialized molecule called the ribosome. The sequence present on the mRNA base is read by the ribosome.
Transcription takes place in nucleus and translation takes place in Cytoplasam. The products of transcription are mRNA, tRNA, rRNA. The products of translation are Proteins.
If a boy exhibits a sex-linked trait that is carried on the X chromosomes, his mother carried at-least one allele for that trait.
The boy has a X chromosome inherited from his mother and he inherited Y chromosome from his father. So, his mother must carried at least one allele for that trait because he exhibits a sex linked trait that is carried on X chromosome.
The correct answer is referred pain.
Referred pain also called reflective pain is pain which<span> is perceived at a location other than the location of the painful stimulus. The size of this pain is related to the intensity and duration of the evoked pain.</span>