QUESTION 30 5 points *BONUS In a breed of corn, purple kernels are dominant (R)
ID: 280514 • Letter: Q
Question
QUESTION 30 5 points *BONUS In a breed of corn, purple kernels are dominant (R) and yellow kernels are recessive (r). Starchy kernels are dominant (T) to sweet kernels (t). What would be the genotypic and phenotypic frequencies of the offspring between a homozygous dominant corn plant for both traits and a homozygous recessive corn plant for both traits? You may need to draw a dihybrid punnett square with 16 offspring squares to answer this question. T TT Arial : 3 (12pt) : T. :-·-·?- Path:p Words:0Explanation / Answer
The genotype of homozygous purple with starchy kernels - RRTT.
The genotype of homozygous yellow with sweet kernels - rrtt.
Cross RRTT X rrtt
Gametes formed RT rt
F1 generation RrTt(purple with starchy kernels) X RrTt
Gametes formed RT, Rt, rT and rt RT, Rt, rT and rt
F2 generation:
The phenotype frequencies:
Purple with starchy kernels - 9/16.
Purple with sweet kernels - 3/16.
Yellow with starchy kernels - 3/16.
Yellow with sweet kernels - 1/16.
The genotype frequencies:
RRTT - 1/16.
RRTt - 2/16 = 1/8.
RrTT - 2/16 = 1/8.
RrTt - 4/16 = 1/4.
RRtt - 1/16.
Rrtt - 2/16 = 1/8.
rrTT - 1/16.
rrTt - 2/16 = 1/8.
rrtt - 1/16.
Male/Female RT Rt rT rt RT RRTT(purple with starchy kernels) RRTt(purple with starchy kernels) RrTT(purple with starchy kernels) RrTt(purple with starchy kernels) Rt RRTt(purple with starchy kernels) RRtt(purple with stweet kernels) RrTt(purple with starchy kernels) Rrtt(purple with sweet kernels) rT RrTT(purple with starchy kernels) RrTt(purple with starchy kernels) rrTT(yellow with starchy kernels) rrTt(yellow with starchy kernels) rt RrTt(purple with starchy kernels) Rrtt(purple with sweet kernels) rrTt(yellow with starchy kernels) rrtt(yellow with sweet kernels)Related Questions
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