Question

Which statement about Mendel is true?
A. His discoveries concerning genetic inheritance were generally accepted by the scientific community at his time.
B. His discovered linkage.
C. He believed that the genetic traits of parents will usually blend in with their children.
D. His principles about genetics apply usually to plants and animals.

Answer 1

The inherited characteristics transmitted between generations were drawn from the ideas first suggested by Gregor Mendel in 1866. Mendel used to focus on pea plants, but his principles apply to characteristics. They will clarify how we inherit the colour of our skin, the colour of our hair and even the tendency of our tongues to roll.

Complete answer:
Mendel observed the paired pea characteristics were either dominant or recessive. When pure-bred parent plants were crossbred, dominant traits were still seen in the offspring, whereas recessive traits were hidden before the first-generation (F1 hybrid plants were left to self-pollinate). The two experiments led to the formulation of Mendel's laws known as inheritance laws, which are: Law of Dominance, Law of Segregation, Law of Independent Assortment
Law of Dominance: - It is also named Mendel's first law of inheritance. According to the rule of dominance, hybrid offspring can only inherit the dominant characteristic of the phenotype. The alleles that are silenced are considered recessive traits, while the alleles that define the characters are known as dormant traits.
Law of Independent Assortment: - Often known as Mendel's second law of inheritance, the law of an individual assortment states that a pair of traits differ from another pair separately during gamete development. When individual heredity factors are assorted independently, different traits are given equal opportunities to appear together.
Law of Segregation: - The rule of segregation specifies that during the production of gametes, two copies of each genetic factor are segregated such that the offspring receive one factor from each parent. In other words, the allele (alternative type of the gene) pairs segregate during gamete formation and re-unite at random during fertilization. This is also known as the third law of inheritance of Mendel.
So, the correct option is (D)-‘His principles about genetics apply usually to plants and animals’.

Note: There are several exceptions to Mendel's rules that have been found as our understanding of genes and inheritance has enhanced. The theory of an independent assortment would not exist whether the genes are similar together or related together on a chromosome. Besides, alleles do not always behave in a normal dominant/recessive fashion, particularly if they are codominant or have variations in expressivity or penetration.