Deoxyribonucleic Acid
Apologies if I butchered the spelling ^^'
Answer:
Active genotype - environmental effects
Explanation:
There are primarily three types of co-relation between genotype and environment which are as follows –
a) Passive genotype –environment effect – This depicts the relationship between the genetic characteristics acquired by a child from his/her parents and the environment in which he/she is raised.
b) Reactive genotype –environment effect – This represents a relationship between genetically acquired behaviour from parents and the reaction corresponding to such behaviour.
c) Active genotype –environment effect – This represents a relationship between genetic tendency of an individual and the environment condition selected by an individual .
Answer:Sunlight bounces off the surface of the lake. --Reflection
Sunlight shines on the beach and transfers heat to the sand. --Absorbtion
Waves of light are bent as they shine through the water to the lake bottom.--Refraction
Explanation: light occurs as beams which are made up of rays.
During reflection, light is re-emitted or through back from surfaces.it responsible for our ability to see things around us. Mirrors works on the principle of reflection
During refraction the direction of the wave changes as it travels from one medium to another of different optical density.in this case, light is passing from air to water,which are two media with different optical density.this change in media causes a bending of the light rays. This is the reason a stick placed a water may seem bent.
Sunlight carries heat .heat is a form of energy that moves as a result of temperature difference.heat from sunlight moves through the atmosphere without a material medium. Then it is absorbed by the particles of objects
Answer:
The correct answer is C
Explanation:
In asexual reproduction method, the offspring generated is identical genetically to the parents. But this is not the case in sexual reproduction. The reason being that the gametes or sex cells produced has only one set of chromosomes and are therefore haploid after the process of meiosis. Meiosis is the process when the offspring formed has chromosomes from two parents and is not identical to the parent. Only certain characteristics are inherited by the offspring from both the parents and offspring has different set of characteristics.
There is a process of assortment taking place inside the cell when the double set of chromosomes becomes one set in a gamete. Out of the pair of chromosomes, there is a random selection. Due to this random assortment, there is a genetic variation between the gametes as the gene alleles on the chromosome are not the same. This principle is said to be the Mendel’s first law of segregation.
Another process of combining chromosomes is the crossing over during the meiosis stage which results in variety of chromosomes. We can say that recombination is possible.
Hence, we can note that during assortment and crossing over, there is no chance for two offspring to be identical to the same mother or father with the exception of identical twins. In the case of identical twins, the genetically identical characteristics develops from same fertilized egg.
From the above process, the structure of gene gets changed creating a variant that can get transmitted to next generation. The change is caused by altering the single base units of DNA or rearranging larger section of genes.