What kind of plant is this?

Nephrolepis cordifolia or fern

i think it is a fern thats what it looks like

1) recessive allele is b
    dominant allele is B
When an X chromosome contains the dominant allele,is written as:
When an X chromosome contains the recessive allele, is written as:

2) the genotype of the woman is She is not color-blind but she is a carrier of red-green color blindness, who passed the allele to their sons.
Woman,  have two X chromosomes.  If she is not colorblind is because there is the dominant allele making her see normally. But, she is a carrier, so while one X chromosomes has the dominant allele, the other has the recessive (making her carry the disease).