Literally, yes.
R is a dominant allele for trait 'r' and r is a recessive allele for trait 'r'.
The word "chromosomes" derived from Greek words chroma (to colour) and soma (body).
X-linked refers to a gene carried on the X chromosome, one of the two sex chromosomes.
It means the chromosomes are able to align at mitosis and meiosis but do not share the same origin. for example if an orange and a lemon tree were cross pollinated, the chromosomes would be...