The lack of publicity of Mendel’s work was due to _______
  • a)
    lack of his ability to communicate
  • b)
    his deafness
  • c)
    lack of the availability of efficient communication methods
  • d)
    him being held captive in jail
Correct answer is option 'C'. Can you explain this answer?

Sushil Kumar answered  •  1 hour ago
Mendel had published his work back in 1865. The communication methods were not well developed and for people to recognize the importance of his work took more than half a decade after it had been published.

What approach used by Mendel was utterly new?
  • a)
    Mathematics to study biological phenomena
  • b)
    Crossing of plants
  • c)
    Growing garden pea plants
  • d)
    Emasculation
Correct answer is option 'A'. Can you explain this answer?

Learners Habitat answered  •  1 hour ago
People had performed crosses on garden pea plants before Mendel. But no one had applied a statistical and probabilistic approach to unveil the underlying phenomena. Mendel was the first to do so.

Which of the following was not observed in F2 progeny of true-breeding tall and dwarf plants?
  • a)
    Homozygous tall plants
  • b)
    Heterozygous tall plants
  • c)
    Homozygous dwarf plants
  • d)
    Heterozygous dwarf plants
Correct answer is option 'D'. Can you explain this answer?

Shiksha Academy answered  •  1 hour ago
The F2 progeny has both dwarf and tall plants. 25% of them are homozygous tall, 50% are heterozygous tall, and 25% are homozygous dwarf. Dwarfness is a recessive trait and thus cannot be expressed in the heterozygous state.

During meiosis, what happens to the parental alleles?
  • a)
    They segregate
  • b)
    They undergo repair
  • c)
    They undergo breakage
  • d)
    They replicate
Correct answer is option 'A'. Can you explain this answer?

Mohit Rajpoot answered  •  1 hour ago
Based on his studies on pea plants, he observed that the parental recessive traits were observed again only in the F2 progeny without any form of blending in F1 generation. This points out that the factors segregate or separate during the process of meiosis.

Alleles of a gene are located on ________
  • a)
    homologous chromosomes
  • b)
    heterologous chromosomes
  • c)
    homologous chromatids
  • d)
    heterologous chromatids
Correct answer is option 'A'. Can you explain this answer?

Vp Classes answered  •  1 hour ago
The alleles of a gene compete or support each other for expression. Hence, they have to be present at homologous sites and on homologous chromosomes.

With green pods as a dominant trait over yellow, which of the following crosses will result in all progeny having yellow pods?
  • a)
    Homozygous green and homozygous yellow
  • b)
    Heterozygous green and heterozygous green
  • c)
    Homozygous yellow and homozygous yellow
  • d)
    Homozygous green and homozygous green
Correct answer is option 'C'. Can you explain this answer?

Bs Academy answered  •  1 hour ago
Yellow being recessive will express only when both alleles are present. That occurs only when both parents can contribute an allele encoding for the yellow pod. For all progeny to have yellow pods, both parents have to be homozygous for yellow pods.

What were the colored bodies observed in the nucleus during the process of division called?
  • a)
    Chromosomes
  • b)
    Genes
  • c)
    DNA
  • d)
    RNA
Correct answer is option 'A'. Can you explain this answer?

Universal Academy answered  •  1 hour ago
Chromosomes means colored bodies/objects. The staining procedures allowed biologists to visualize the nucleus and chromosomes during the process of cell division.

The presence of two different alleles at a particular locus results in _________
  • a)
    Homozygosity
  • b)
    Heterozygosity
  • c)
    Hemizygosity
  • d)
    Nullizygosity
Correct answer is option 'B'. Can you explain this answer?

New Words answered  •  1 hour ago
Heterozygosity refers to different alleles present at a given locus. This is the condition that is of interest to the study of genetics. It can be used to test the nature of an allele.

Skin is a respiratory organ in
  • a)
    Lizards
  • b)
    Birds
  • c)
    Primitive mammals
  • d)
    Frogs
Correct answer is option 'D'. Can you explain this answer?

Pavya Sree answered  •  4 hours ago
Frog is an amphibian.And it can also live in both land & water . In land it respired through lungs. In water it respired through skin. but the others are live in land & respire through lungs.

Do peas show imbricate aestivation?

Pavya Sree answered  •  4 hours ago
Yes ,peas show imbricate Aestivation in calyx.
And vexillary Aestivation in corolla.

The seeds which can tolerate reduction in moisture and temperature are called –
  • a)
    Dormant seed 
  • b)
    Vernalized seed 
  • c)
    Orthodox seed
  • d)
    Recalcitrant seed
Correct answer is option 'C'. Can you explain this answer?

S R Khan answered  •  7 hours ago
Orthodox seeds are seeds which will survive drying and/or freezing during ex-situ conservation. According to information from the U.S. Department of Agriculture, there is variation in the ability of orthodox seeds to withstand drying and storage with some seeds being more sensitive than others. Thus, some seeds are considered intermediate in their storage capability while others are fully orthodox... more

Immediately after ovulation, the mammalian egg is covered by a membrane known as
  • a)
    chorion
  • b)
    zona pellucida
  • c)
    corona radiata
  • d)
    vitelline membrane
Correct answer is option 'C'. Can you explain this answer?

S R Khan answered  •  7 hours ago
Immediately after ovulation, the layer that forms around the ovum is called corona radiata. It is formed by the granulosa cells of cumulus oophorus. Corona radiata probably increases the likelihood that the ovum will be picked up in the uterine tube.
Fetching relevant content for you
Ask a question