In the aster Leucelene roseata petal color may be lavender p

In the aster, Leucelene roseata, petal color may be lavender, pink or white. Color is due to three alleles: c^r; c^p; c^w. Regardless of what crosses you make between petal color phenotypes, you never obtain male progeny with pink petals. What could be true? (Can be more than 1 answer) Please explain

pink is recessive in males

pink is codominant, males are heterogametic

expression of pink is limited to females

pink is a lethal recessive on the X-chromosome

the described results are impossible

Solution

Answer : all are correct except e.

a) pink is recessive in males

b) pink is codominant, males are heterogametic

c) expression of pink is limited to females

d) pink is a lethal recessive on the x-chromosome