Question

Flower color is incompletely dominant in snapdragons. If a white-flowered plant (WW) is

crossed with a red-flowered plant (RR), all of the offspring are pink (RW). What is the

probability of getting pink-flowered offspring from two pink-flowered parents? Show your

work. 1 point

Probability of getting pink-flowered offspring: __________________ %

Reminders about human blood type genetics.

• ABO blood types

o A and B alleles are co-dominant o A allele is dominant to O allele o B allele is dominant to O allele • Rh-factor

o Rh factor is on a separate gene from ABO gene (inherited independently, like a

dihybrid cross) o Rh-positive allele is dominant to Rh-negative allele o Letter D is used for dominant allele o Letter d is used for recessive allele

Phenotype Possible Genotypes* AB AB A AA or AO B BB or BO O OO Rh-positive DD or Dd Rh-negative

dd

The other system for indicating genotypes uses superscripts such as IAIA (for AA in table above) or IAi (for AO in table above).

Answer 1

FLOWER COLOUR - WW-WHITE, RR - RED, RA- PINK PINK FLOWERED (RW) X PINK FLOIMERED CRIN) RW GAMETES RW RTRR RED PINK RW WW PINK AHITE PROBABILITY OF PINK FLOWERED OFFSPRING = 2 OUT OF 4 OR 50%. (FINAL). ANSWER