Question:
A <u>yellow</u> seeded, purple-flowered heterozygous plant (YyPp) is crossed with a green seeded, white-flowered plant (yypp).
(Y = yellow seed allele; y = green seed allele; P = purple flower allele; p = white flower allele)
What is the probability that an offspring of this cross produces plants with green seeds and white flowers? Assume the traits assort independently.
Answer:
The probability that an offspring of this cross produces plants with green seeds and white flower is 25% = 0.25
Explanation:
<u>Available data</u>:
- Y = yellow seed allele; Dominant
- y = green seed allele; Recessive
- P = purple flower allele; Dominant
- p = white flower allele; Recessive
- the traits assort independently
Cross: A yellow seeded, purple-flowered heterozygous plant with a green seeded, white-flowered plant
Parentals) YyPp x yypp
Gametes) YP, Yp, yP, yp yp, yp, yp, yp
Punnett square)
YP Yp yP yp
yp YyPp Yypp yyPp yypp
yp YyPp Yypp yyPp yypp
yp YyPp Yypp yyPp yypp
yp YyPp Yypp yyPp yypp
F1) 4/16 = 1/4 = 25% YyPp, Yellow seeds and Purple flowers
4/16 = 1/4 = 25% Yypp, Yellow seeds and white flowers
4/16 = 14 = 25% yyPp, green seeds and purple flowers
4/16 = 1/4 = 25% yypp, green seeds and white flowers.
The probability that an offspring of this cross produces plants with green seeds and white flower is 25% = 0.25
