What Is Euthanasia?
Euthanasia is closely related to death. It is a death resulting from the patient’s will. But in general, it does... View Article
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What Are The Three Groups Of Structural Genes Of Eukaryotes?
All structural genes of eukaryotes can be divided into three groups – Genes are actively working in all organism cells.... View Article
What Does The Level Of Breeding Depend On?
Inbreeding is crossing between relatives. The level of inbreeding depends on the level of familiarity. The closest inbreeding is an... View Article
When Does Incomplete Dominance Occur?
The incomplete dominance occurs when the recessive allele is not fully suppressed. Some human and animal traits are subject to... View Article
What Are The Rules Directing Polygenic Heredities?
Polygenic heredities are directed by the following rules – Variations of quantitative traits depend on the number of the dominant... View Article
What Are The Definite Conditions In Which Mendel’s Laws Are Said To Be Applicable?
As every natural law, Mendel’s laws may work only in definite conditions, which are – Gene location on different chromosomes... View Article
What Are The Types Of Plasmids In Bacterial Cells?
In bacterial cells, there are three types of plasmids: containing sex factor F, factor R and factor col – colicinogenic.... View Article
Give The Statements Of The Chromosome Theory Of Inheritance.
Based on certain assumptions, the statements of the chromosome theory of inheritance are proposed, which are – Genes are on... View Article
Give A Few Examples Of Vectors.
The genes inserted into foreign cells cannot be reproduced. However, we may cope with this problem, if genes are inserted... View Article
What Is Reparation?
Some damage to DNA may occur due to the action of different agents or during protein biosynthesis. Many of those... View Article
What Happens To Other Sperms Entering The Ovum Cytoplasm?
During human ovulation, an ovum is liberated from the ovarium. It is surrounded by a layer of follicular cells, which... View Article
What Is Androgenesis?
Androgenesis is a type of sexual reproduction when embryo development is performed from male nuclei and female cytoplasm. It may... View Article
What Are The Postulates Of The Genetic Code?
The following are the postulates of the genetic code – AUG – is a start codon In the genetic code... View Article
What Is Constitutive Heterochromatin And Facultative Heterochromatin?
The constitutive heterochromatin is in the telomere regions and regions adjacent to the centromere and along with some internal fragments.... View Article
What Are The Three Types Of DNA Replication?
Three types of DNA replication can be distinguished: conservative, semiconservative, dispersive. All these types allow making a daughter DNA consisting... View Article
Explain The Water Vascular System Seen In The Members Of The Phylum Echinodermata.
It is a characteristic feature of all echinoderms. It includes a system of canals within the body in which the... View Article
Give The Salient Features Of The Mutation Theory.
Mutations are large changes occurring spontaneously in the natural population. These changes are heritable, producing new species. Thus, mutations form... View Article
What Are Spiracles In Cockroaches?
They are the external openings of the tracheal tubes. There are 10 pairs of spiracles. Out of which, The 1st... View Article
Write About Labium In Cockroaches.
It represents the lower lip and covers the mouth from the ventral side. It is also called the second maxillae... View Article
Write About The Mandibles In Cockroaches.
The mouthparts of the cockroaches are – Labrum or the upper lip Mandibles or the true jaws Maxilla or additional... View Article
