In context of amniocentesis, which of the following statement is incorrect?

A tall true breeding garden pea plant is crossed with a dwarf true breeding garden pea plant. When the F₁ plants were selfed, the resulting genotypes were in the ratio of

Pick out the correct statements$\\ (a)$Haemophilia is a sex-linked recessive disease.$\\ (b)$Down’s syndrome is due to aneuploidy.$\\ (c)$Phenylketonuria is an autosomal recessive gene disorder.$\\ (d)$Sickle cell anaemia is an X-linked recessive gene disorder.

In a testcross involving F$_1$ dihybrid flies, more parental-type offspring were produced than the recombinant-type offspring. This indicates

Which of the following most appropriately describes haemophilia?

The genotypes of a husband and wife are$I^{A}I^{B} and I^{A}i.$ Among the blood type of their children, how many different genotypes and phenotypes are possible?

Select the correct match:

Which of the following pairs is wrongly matched?

Select the correct statement:

Select the correct match:

Which of the following features is used to identify a male cockroach from a female cockroach?

A woman has an X-linked condition on one of her X chromosomes. This chromosome can be inherited by

Select the incorrect match:

Which of the following characteristics represent ‘Inheritance of blood groups’ in humans?$\newline$a. Dominance$\newline$b. Co-dominance$\newline$c. Multiple allele$\newline$d. Incomplete dominance$\newline$e. Polygenic inheritance

Experimental verification of the chromosomal theory of inheritance was done by:

Select the correct match.

How many true breeding pea plant varieties did Mendel select as pairs, which were similar except in one character with contrasting traits?

By which method was a new breed ‘Hisardale’ of sheep formed by using Bikaneri ewes and Marino rams?

Identify the wrong statement with reference to the gene ‘I’ that controls ABO blood groups.

The production of gametes by the parents, formation of zygotes, the $F_1$ and $F_2$ plants, can be understood from a diagram called:

Mutations in plant cells can be induced by:

Given below are two statements: $\newline$ $\newline$Statement I: Mendel studied seven pairs of contrasting traits in pea plants and proposed the Laws of Inheritance. $\newline$ $\newline$Statement II: Seven characters examined by Mendel in his experiment on pea plants were seed shape and colour, flower colour, pod shape and colour, flower position and stem height. $\newline$ $\newline$In the light of the above statements, choose the correct answer from the options given below:

$\newline$Given below are two statements: $\newline$ $\newline$Assertion (A): Mendel’s law of independent assortment does not hold good for the genes that are located closely on the same chromosome. $\newline$Reason (R): Closely located genes assort independently. $\newline$ $\newline$In the light of the above statements, choose the correct answer from the options given below:

The phenomenon of pleiotropism refers to

Frequency of recombination between gene pairs on the same chromosome as a measure of the distance between genes to map their position on chromosome, was used for the first time by

Which of the following statements are correct about Klinefelter's Syndrome?$\newline$A. This disorder was first described by Langdon Down (1866).$\newline$B. Such an individual has overall masculine development. However, the feminine development is also expressed.$\newline$C. The affected individual is short statured.$\newline$D. Physical, psychomotor and mental development is retarded$\newline$E. Such individuals are sterile.$\newline$Choose the correct answer from the options given below:$$

Broad palm with a single palm crease is visible in a person suffering from:

Which one of the following symbols represents mating between relatives in human pedigree analysis?

Which of the following is NOT an advantage of inbreeding?

Which of the following is a characteristic feature of cockroach regarding sexual dimorphism?

Which one of the following can be explained on the basis of Mendel’s Law of Dominance? $\newline$ A. Out of one pair of factors one is dominant and the other is recessive. $\newline$ B. Alleles do not show any expression and both the characters appear as such in F_2 generation. $\newline$ C. Factors occur in pairs in normal diploid plants. $\newline$ D. The discrete unit controlling a particular character is called factor. $\newline$ E. The expression of only one of the parental characters is found in a monohybrid cross.

$\newline$Given below are two statements: $\newline$ $\newline$Statement I: Chromosomes become gradually visible under light microscope during leptotene stage. $\newline$ $\newline$Statement II: The beginning of diplotene stage is recognized by dissolution of synaptonemal complex. $\newline$ $\newline$In the light of the above statements, choose the correct answer from the options given below: