Question

“Like begets like" an important and universal phenomenon of life is due to
A. Eugenics
B. Inheritance
C. Dominance
D. Crossing-over

Answer 1

Study of heredity is known as Genetics. Genetics is a branch of biology related to the study of genes, heredity, and genetic variation in organisms. Examples of genetics are human genetics, fruit fly genetics, and mouse genetics. Heredity was first observed by Gregor Mendel. Gene is a basic unit of heredity. Genes are formed of DNA.

Complete answer:
-The reception of genetic characters through the transmission from parents to the young ones(offsprings) can be termed as Inheritance.
-In order words, inheritance is the transfer of genetic qualities or characteristics from parents to offspring.
Thus, it is also said that "like begets like".
-Eugenics is the study of the possibility or chances of improving the characters of the human population.
-Dominance is the process in which one of a pair of genes is dominant over the other.
-Crossing over is the exchange of segments of the chromosome during the production of gametes between non-sister chromatids.

Hence, the correct answer is option (B).

Additional information:
-Inheritance is another word for heredity.
-Offspring resemble their parents because their DNA is derived from their parents.
-Inheritance is of four types: Incomplete dominance, Complete dominance, Co-dominance, and Sex-linked.
-X-linked recessive is the most common mode of inheritance.

Note: Each of the genetic traits is transferred unchanged to offsprings through units of inheritance. Alleles are the units of inheritance. For each character, one allele from each parent is inherited to offspring. ‘Laws of Inheritance’ are given by Gregor Mendel. Genetic inheritance takes place because of genetic material in the form of DNA that is transferred from parents to their offsprings. That's why offsprings resemble their parents.