Does an anther on a plant have a double set of chromosomes?

Can someone help me with this question? (Biology)?

• A plant has 3 traits: red flower, round seeds and spiny stem which are dominant over white flower and long seed and round stem. You are told that two of these traits are linked and one segregates independently. Explain what linkage and independent segregation means. Describe how you would set up crosses in order to determine which genes are linked and which are not linked. Would you be able to map all three genes on the chromosomes? If so how?

• Answer:

  Linkage - two things with a connection. Independent Segregation - irrelevant to other traits. Your gene crosses would be in tables. You would set up scenarios of 'mother' and 'father' plants and determine whether the gene is dominant or recessive. For instance - you have been told that "red flower, round seeds and spiny stem" are the dominating. This means that you put these alleles in capital letters. If an organism has a dominant feature then that will always prevail for instance 'Red' + 'White' will give you 'Red' or 'Rw', RR' and 'ww' + wR'. Without fully understanding what other gene it also carries it is probably not possible to determine which secondary genes go onto the chromosome diagram. Sorry if this was a waste of time.