When two genetic loci produce identical phenotypes in both $cis$ and $trans$ configurations,they are considered to be:

The father has blood group $AB$ and the mother has blood group $O$. Which of the following blood groups can the child have?

Match List-$I$ with List-$II$:

List-$I$	List-$II$
$(A)$ Two or more alternative forms of a gene	$(I)$ Back cross
$(B)$ Cross of $F_1$ progeny with homozygous recessive parent	$(II)$ Ploidy
$(C)$ Cross of $F_1$ progeny with any of the parents	$(III)$ Allele
$(D)$ Number of chromosome sets in plant	$(IV)$ Test cross

Choose the correct answer from the options given below:

Select the incorrect statement from the following.

When an $F_1$ individual is crossed with either of the two parents,it is known as:

Identify the correct and incorrect statements from the following:
$(1)$ Mendel is considered the father of modern genetics.
$(2)$ Down's syndrome is a sex-linked chromosomal disorder.
$(3)$ Sickle cell anemia is an example of point mutation.
$(4)$ Color blindness is a hereditary trait.
$(5)$ Triploid female flies are found in Drosophila.