A hypothetical flowering plant produces blue, light blue, and white flowers. To determine the inheritance pattern, the following crosses were conducted with the results indicated:

blue x blue * all blue
white x white all white
blue x white * all light blue
What type of inheritance pattern does this represent?

a. simple Mendelian
b. X-Iinked
c. codominance
d. incomplete dominance
e. pleiotropy

d. incomplete dominance

Explanation:

When none of the alleles of a particular locus completely masks the expression of the other allele of the same gene, it is called incomplete dominance. If the allele B gives "blue" phenotype and allele b gives white phenotype, a cross between blue (BB) and white (bb) parents would produce all the progeny with genotype Bb. Since the allele B does not completely prevent the expression of allele b in the heterozygous condition, the phenotype of the F1 hybrids would be "light blue". Therefore, it is an example of incomplete dominance.

blue (BB) x blue (BB) = all blue (BB)

white (bb) x white (bb)= all white (bb)

blue (BB) x white (bb)= all light blue (Bb)

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.