Scientist Gregor Mendel (1822-1884) is often called the “father of modem genetics� and is famous for his work involving the inheritance of certain traits in pea plants. Suppose that the genes controlling the color of peas are Y for yellow and y for green. Each plant has two genes, one from the female (seed) and one from the male (pollen). The Y gene is dominant, and therefore a plant with genes YY will have yellow peas, a plant with genes Yy or yY will have yellow peas, and a plant with genes yy will have green peas. If a plant with two yellow genes YY is crossed with a plant with two green genes yy , the result is four hybrid offspring with genotypes Yy . The offspring will be yellow, but will carry the recessive green gene. Suppose that one parent pea plant has genotype YY and the other has genotype Yy . a. Make a chart showing the possible genotypes of the offspring. b. What is the probability that a given offspring will have green peas? c. What is the probability that a given offspring will have yellow peas?
Scientist Gregor Mendel (1822-1884) is often called the “father of modem genetics� and is famous for his work involving the inheritance of certain traits in pea plants. Suppose that the genes controlling the color of peas are Y for yellow and y for green. Each plant has two genes, one from the female (seed) and one from the male (pollen). The Y gene is dominant, and therefore a plant with genes YY will have yellow peas, a plant with genes Yy or yY will have yellow peas, and a plant with genes yy will have green peas. If a plant with two yellow genes YY is crossed with a plant with two green genes yy , the result is four hybrid offspring with genotypes Yy . The offspring will be yellow, but will carry the recessive green gene. Suppose that one parent pea plant has genotype YY and the other has genotype Yy . a. Make a chart showing the possible genotypes of the offspring. b. What is the probability that a given offspring will have green peas? c. What is the probability that a given offspring will have yellow peas?
Solution Summary: The author explains that if a plant with two yellow genes (YY) is crossed with another plant, the outcome is four hybrid offspring with genotypes Yy.
Scientist Gregor Mendel (1822-1884) is often called the “father of modem genetics� and is famous for his work involving the inheritance of certain traits in pea plants. Suppose that the genes controlling the color of peas are
Y
for yellow and
y
for green. Each plant has two genes, one from the female (seed) and one from the male (pollen). The
Y
gene is dominant, and therefore a plant with genes
YY
will have yellow peas, a plant with genes
Yy
or
yY
will have yellow peas, and a plant with genes
yy
will have green peas.
If a plant with two yellow genes
YY
is crossed with a plant with two green genes
yy
, the result is four hybrid offspring with genotypes
Yy
. The offspring will be yellow, but will carry the recessive green gene.
Suppose that one parent pea plant has genotype
YY
and the other has genotype
Yy
.
a. Make a chart showing the possible genotypes of the offspring.
b. What is the probability that a given offspring will have green peas?
c. What is the probability that a given offspring will have yellow peas?
rmine the immediate settlement for points A and B shown in
figure below knowing that Aq,-200kN/m², E-20000kN/m², u=0.5, Depth
of foundation (DF-0), thickness of layer below footing (H)=20m.
4m
B
2m
2m
A
2m
+
2m
4m
sy = f(x)
+
+
+
+
+
+
+
+
+
X
3
4
5
7
8
9
The function of shown in the figure is continuous on the closed interval [0, 9] and differentiable on the open
interval (0, 9). Which of the following points satisfies conclusions of both the Intermediate Value Theorem
and the Mean Value Theorem for f on the closed interval [0, 9] ?
(A
A
B
B
C
D
=
Q6 What will be the allowable bearing capacity of sand having p = 37° and ydry
19 kN/m³ for (i) 1.5 m strip foundation (ii) 1.5 m x 1.5 m square footing and
(iii)1.5m x 2m rectangular footing. The footings are placed at a depth of 1.5 m
below ground level. Assume F, = 2.5. Use Terzaghi's equations.
0
Ne
Na
Ny
35 57.8 41.4 42.4
40 95.7 81.3 100.4
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