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Class 10
Science
Biology
Heredity and Evolution
501
150
The unit of natural selection is
(a)
Family
(b)
Species
(c)
Individual
(d)
Population
Correct answer:
(c)
Solution:
Natural selection is gradual, a nonrandom process by which biological traits become either more or less common.The term was popularised by Charles Darwin. The unit of natural selection is individual since genes work at an individual level.
So, the correct answer is option C.
501
150
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View Similar topics ->
components of food
heredity and evolution
how do organisms reproduce?
microorganisms: friend and foe
why do we fall ill?
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Related Questions
Which ones of the following are analogous structures?
Which of the following term was used by Mendel for genes?
Explain the terms analogous and homologous organs with examples.
A breeding experiment studying a single trait is
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is dominant and the short-stern trait
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Related Questions
Which ones of the following are analogous structures?
Which of the following term was used by Mendel for genes?
Explain the terms analogous and homologous organs with examples.
A breeding experiment studying a single trait is
Multiple alleles are characterized by
In pea plants, the long-stem trait
(
L
)
is dominant and the short-stern trait
(
I
)
is recessive. Two pea plants were crossed, producing seeds that yielded 165 long-stem plants and 54 short-stem plants. The genotypes of the parent plants were most likely
A pea plant with blue color flower by
B
B
is cross-bred with a pea plant with white flower denoted by
w
w
.
a) What is the expected color of the flowers in their F
1
progeny?
b) What will be the percentage of plants bearing white flower in F
2
generation, when the flowers of F
1
plants were selfed?
c) State the expected ratio of the genotype
B
B
and
B
w
in the F
2
progeny?
For green coloured pod and rounded seed, which is the functional unit of inheritance?
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