Tag: unravelling genetic mysteries

Quizzes (2) Questions (7)

Questions Related to unravelling genetic mysteries

Multiple choice botany unravelling genetic mysteries experiments of mendel mendel's law of inheritance works of mendel

Which of these is not a part of Mendel's laws

  1. Law of independent assortment

  2. Law of segregation

  3. Law of dominance

  4. Law of linkage
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Linkage is the tendency of two or more genes to inherit together as a pair and not to sort out independently.
Thus, linkage is not applicable according to Mendelian principles.
Linkgae is strictly against Law of independent assortment where Mendel explains that the characters are sorted out independently while forming gametes.

Multiple choice botany unravelling genetic mysteries experiments of mendel mendel's law of inheritance works of mendel

Which of the following characteristics represent inheritance of dihybrid crosses in pea :
a) Incomplete dominance
b) Dominance
c) Law of segregation 
d) Co - dominance
e) Polygenic inheritance
f) Law of independent assortment 

  1. b and f

  2. a, d and f

  3. b, c and f

  4. b , c and e
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A dihybrid cross involves the inheritance of two traits. Mendel's experiments with dihybrid crosses demonstrated the Law of Dominance (b) and the Law of Independent Assortment (f).

Multiple choice botany unravelling genetic mysteries experiments of mendel mendel's law of inheritance works of mendel

Successive exploitation of heterocyst depends upon the ______________.

  1. Presence of heterotic effect in the hybrid

  2. Availability of male sterility

  3. Out crossing nature of the flower

  4. Heterotic effect and availability
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The success of hybrid seed production often relies on the heterotic effect (hybrid vigor), which is the tendency of a crossbred individual to show qualities superior to those of both parents.

Multiple choice botany unravelling genetic mysteries experiments of mendel mendel's law of inheritance works of mendel

If mendel had studied the 7 traits using a plant with 12 chromosomes instead of 14 ,in what way this interpretation have been different 

  1. He would have mapped the chromosomes

  2. He would have discovered blending or incomplete dominance

  3. He would not have discovered law of independent assortement

  4. He would have discovered sex linkage
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice botany unravelling genetic mysteries experiments of mendel mendel's law of inheritance works of mendel

Choose the correct answer from the alternatives given.

Among the seven pairs of contrasting traits in pea plant as studied by Mendel, the number of traits related to flower, pod, and seed respectively were

  1. 2, 2, 2

  2. 2, 2, 1

  3. 1, 2, 2

  4. 1, 1, 2
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mendel's seven traits were: flower color, flower position, stem height, pod shape, pod color, seed shape, and seed color. Categorizing these: flower (2), pod (2), and seed (2), with stem height as the remaining one.

Multiple choice botany unravelling genetic mysteries experiments of mendel mendel's law of inheritance works of mendel

Choose the correct answer from the alternatives given.


The colour based contrasting traits in seven contrasting pairs, studied by Mendel in pea plant were.

  1. 1

  2. 2

  3. 3

  4. 4
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The colour based contrasting traits studied by Mender in pea plant were pod colour,  i.e., green (dominant) and yellow (recessive), flower colour, i.e., violet (dominant) and white (recessive) and seed colour, i.e., yellow (dominant) and green (recessive).