MONOHYBRID CROSS Online version GENETICS by munirah mihat 1 In watermelons, green rinds (G) are dominant to striped rinds (g). What is the genotype of a heterozygous green watermelon? a GG b gg c Gg d Green 2 In cacti, long arms (A) are dominant to short arms (a). Suppose 2 heterozygous cacti are crossed. What percentage of their offspring are expected to have short arms? a 0% b 25% c 75% d 100% 3 An allele (T) for tongue-rolling is dominant over non-tongue rolling. What would be the genotypes of both parents if all of the offspring in the F1 generation are non-tongue rolling? a TT X Tt b Tt X tt c TT X tt d tt X tt 4 T - tall and t = short In the punnett square below, what belongs in the missing square a tt b Bb c Tt d TT 5 B=brown eyes b= blue eyes What is true about these two brothers that have brown eyes: One has genotype BB the other Bb. a they have same phenotype and genotype b they have same phenotype but different genotypes c they have different genotypes and phenotypes d they have same genotype but different phenotypes