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NEET • BIOLOGY • PRINCIPLE OF INHERITANCE AND VARIATION
Principle of inheritance and variation practice · Medium
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181
Medium
181 of 188
Application
+4 | -1
Probability of four sons to a couple is
View answer and explanation
Correct option: C
Option C () is correct because the probability of having a son is 1/2, and for four sons in a row, it's (1/2)4.
182
Medium
182 of 188
Application
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A self-fertilizing trihybrid plant forms
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Correct option: A
8 different gametes and 64 different zygotes
Option A (8 different gametes and 64 different zygotes) is correct because a trihybrid plant (AaBbCc) forms different gametes, and the number of zygotes is .
183
Medium
183 of 188
Remembering
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Sex chromosomes of a female bird are represented by
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Correct option: D
ZW
Option D (ZW) is correct because in birds, the female is the heterogametic sex, represented by ZW, while the male is homogametic, represented by ZZ.
184
Medium
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Understanding
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…A… gene produces all gametes that are similar, while a ….B… produces two kinds of gametes each having one allele with equal proportion
Choose the correct option for A and B
Choose the correct option for A and B
View answer and explanation
Correct option: A
A-homozygous; B-heterozygous
Option A (A-homozygous; B-heterozygous) is correct because a homozygous gene produces similar gametes, while a heterozygous gene produces two kinds of gametes with equal proportions.
185
Medium
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Understanding
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The genetic deficiency of ADH-receptor leads to
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Correct option: D
Nephrogenic diabetes
The correct answer is C (Nephrogenic diabetes) because it is caused by the kidneys' inability to respond to ADH, due to a deficiency in ADH receptors.
186
Medium
186 of 188
Understanding
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Which of the given traits of pea plants selected by Mendel expresses itself only in homozygous condition?
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Correct option: B
White flower
Option B (White flower) is correct because in Mendel's pea plants, white flower color is a recessive trait and is only expressed in the homozygous recessive condition.
187
Medium
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Application
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Normal vision woman whose mom was colour blind, marries a man who had a colour blind dad. What percentage of children of this couple will be colour blind?
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Correct option: B
0.5
Option B (0.5) is correct because the woman has a 50% chance of being a carrier, and if she is, there's a 50% chance her son will inherit the colorblindness allele.
188
Medium
188 of 188
Understanding
+4 | -1
The -generation offspring in a plant showing incomplete dominance, exhibit
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Correct option: D
Similar genotypic and phenotypic ratio of 1 : 2 : 1
Option D (Similar genotypic and phenotypic ratio of 1 : 2 : 1) is correct because in incomplete dominance, the genotypic and phenotypic ratios are the same due to the intermediate heterozygote phenotype.
Revision notes and key takeaways
Review PRINCIPLE OF INHERITANCE AND VARIATION in your textbook or class notes, then use this set to check your understanding.
Showing 181-188 of 188 questions