Tag: works of mendel

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Multiple choice biology mendel's law of inheritance experiments of mendel works of mendel mendel's laws of inheritance

When two genes control a single character and have cumulative effect the ratio is _______

  1. $1:1:1:1$
  2. $1:4:6:4:1$
  3. $1:2:1$
  4. $1:6:15:20:15:6:1$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
When two genes present on the same loci give an additive or cumulative effect like the spotted and Dotted seed of Lens sps the ratio is 1:2:1
So, the correct answer is '1:2:1'
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). 

Multiple choice biology mendel's law of inheritance experiments of mendel works of mendel mendel's laws of inheritance

Name the scientist who converted Mendel's conclusions into principles of heredity

  1. De Vries

  2. Tschermak-seysenegg

  3. Carl Correns

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

Carl Erich Correns was a German botanist and geneticist, who is notable primarily for his independent discovery of the principles of heredity, and for his rediscovery of Gregor Mendel's earlier paper on that subject, which he achieved simultaneously but independently of the botanists Erich Tschermak von Seysenegg. He also converted Mendel’s conclusions into principles of heredity.

So, the conclusion is ‘Carl correns’.