26. A snap dragon with pink petals black anthers and long stems was allowed to self fertilize. from the resulting seeds, 650 adult plants were obtained. The phenotype of these off springs are listed here.
78 red long tan
26 red short tan
44 red long black
15 red short black
39 pink long tan
13 pink short tan
204 pink long black
68 pink short black
5 white long tan
2 white short tan
117 white long black
39 white short black
a. Using P for one allele and p for the other, indicate how flower color is inherited.
B. What numbers. Of red: pink: white, would have been expected among these 650 plants?
c. How are anther color and stem length inherited?
D. What was the genotype of the original plant ?
E. Do any of three genes show independent assortment?
F. For any genes that are linked, indicate the arrangement of the alleles on the homologous chromosomes in the original snap dragon and estimate the distance between the genes.
This is a genetics question I literally just submitted this question by attaching the picture taken directly from the book. Please throughly answer all questions
26. A snap dragon with pink petals black anthers and long stems was allowed to self fertilize. from the resulting seeds, 650 adult plants were obtained. The phenotype of these off springs are listed here.
78 red long tan
26 red short tan
44 red long black
15 red short black
39 pink long tan
13 pink short tan
204 pink long black
68 pink short black
5 white long tan
2 white short tan
117 white long black
39 white short black
a. Using P for one allele and p for the other, indicate how flower color is inherited.
B. What numbers. Of red: pink: white, would have been expected among these 650 plants?
c. How are anther color and stem length inherited?
D. What was the genotype of the original plant ?
E. Do any of three genes show independent assortment?
F. For any genes that are linked, indicate the arrangement of the alleles on the homologous chromosomes in the original snap dragon and estimate the distance between the genes.
This is a genetics question I literally just submitted this question by attaching the picture taken directly from the book. Please throughly answer all questions
78 red long tan
26 red short tan
44 red long black
15 red short black
39 pink long tan
13 pink short tan
204 pink long black
68 pink short black
5 white long tan
2 white short tan
117 white long black
39 white short black
a. Using P for one allele and p for the other, indicate how flower color is inherited.
B. What numbers. Of red: pink: white, would have been expected among these 650 plants?
c. How are anther color and stem length inherited?
D. What was the genotype of the original plant ?
E. Do any of three genes show independent assortment?
F. For any genes that are linked, indicate the arrangement of the alleles on the homologous chromosomes in the original snap dragon and estimate the distance between the genes.
This is a genetics question I literally just submitted this question by attaching the picture taken directly from the book. Please throughly answer all questions
snap dragon with pink petals black anthers and long stems was allowed to self fertilize. from the resulting seeds, 650 adult plants were obtained. The phenotype of these off springs are listed here.
78 red long tan
26 red short tan
44 red long black
15 red short black
39 pink long tan
13 pink short tan
204 pink long black
68 pink short black
5 white long tan
2 white short tan
pink petals, black anthers, long stems × pink petals, black anthers, long stems
The cross is pink × pink
(78 + 6 + 44 + 15) red :
(39 + 13 + 204 + 68) pink :
(2 + 2 + 117 + 39) white
= 143 red : 324 pink : 160 white.
The appearance of two new phenotypes (red and white) suggests that flower color shows incomplete dominance.
This is confirmed by the 1:2:1 monohybrid ratio seen in the self-cross progeny.
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a. Using P for one allele and p for the other, indicate how flower color is inherited.
a.
The pink flowered plants are Pp,
red are PP,
and
white are pp.
B. What numbers. Of red: pink: white, would have been expected among these 650 plants?
= 143 red : 324 pink : 160 white.
c. How are anther color and stem length inherited?
pink petals, black anthers, long stems × pink petals, black anthers, long stems
long stems × , long stems
78 red long tan-------long
26 red short tan
44 red long black -------long
15 red short black
39 pink long tan -------long
13 pink short tan
204 pink long black-------long
68 pink short black
5 white long tan-------long
2 white short tan
Long =(78+44+39+204+5) =
Short =(26+15+13+68+2)=
The ratio of long to short is 3:1
Where long stem-exhibit-----dominance
Short stem------------recessive
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D. What was the genotype of the original plant ?
pink petals, black anthers, long stems = Pp Ll Bb
E. Do any of three genes show independent assortment?
Yes : three genes show independent assortment
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