Principle of inheritance and variation practice · Mixed difficulty

Consider the following four statements I, II, III and IV and select the correct statements
I. Mendelian experiments has a large sampling size, which gave greater credibility to the data that he collected
II. Recessive allele influences the appearance of the phenotype even in the presence of a dominant allele
III. Multiple alleles can be found only when population studies are made
IV. In ${\mathrm{F}_2}$-generation of a Mendelian monohybrid cross, the tall and dwarf traits were identical to their parental types and shows blending inheritance
The correct statements are

What will be the recombination frequency of genes and A and B if number of recombinants obtained are two and total offsprings are four?

Crossing over in diploid organisms is responsible for

The 1 : 2 : 1 ratio with the pink flower in the ${\mathrm{F}_2}$-generation indicate the phenomenon of

Which of the following type of mutation involves the reverse order of genes in a chromosome?

Law of segregation is also called law of

Genes, when close together on a chromosome, are known as

in $\mathrm{\beta }$-thalassaemia, the affected chromosome is

Heredity is

Observe the four crosses given below:
(A) TTrr $\times$ ttRR
(B) TtRr $\times$ ttrr
(C) TtRr $\times$ TTrr
(D) Ttrr $\times$ ttRr
In which of the following crosses, $1: 1: 1: 1$ ratio of progenies is obtained?

Aneuploidy is not resulted in

If the foetus is $\mathrm{R}{\mathrm{h}^ + }$ and mother is $\mathrm{R}{\mathrm{h}^ - }$, then

The title of Mendel’s paper, while presenting at Brunn Natural History Society in 1865 was

T.H. Morgan worked with the tiny fruit flies Drosophila melanogaster for experimental verification of chromosomal theory of inheritance, as they are very suitable for such studies because

Find out the mismatched pair

I = Inflated, i = constricted. Given that the phenotype of $\text{F}_1$ progeny is inflated pods and that the parents are true-breeding, which of the following is not a possible genotype of parents?

A person with type A blood group may safely receive a transfusion of

Red (RR) Antirrhinum is crossed with white (WW) one. Offspring RW are pink. This is an example of

Which of the following is not a correct match?

How many types of gametes can be produced by a Diploid organism who is heterozygous for 4 loci?

Method of sex determination in cockroach is

Which one of the following conditions in human beings is correctly matched with its chromosome complement ?

In short horned cattle, genes for red( R) and white( r) coat colour occur. Cross between red (RR) and white (rr) produced (Rr) roan. This is an example of

If a cross between two individuals produces offspringe with 50% dominant character (A) and 50% recessive character (a),then the genotypes of parents are

The recombination frequency between the genes a & c is 5%, b & c is 15%, b & d is 9%, a & b is 20%,c & d is 24% and a &d is 29%. What will be the sequence of these genes on a linear chromosome?

Improvement of human race through hereditary qualities is called

Which of the following statements are false?
I. A Dominant allele determines the phenotype when paired with a recessive allele
II. A recessive allele is weaker than a dominant allele
III. A recessive allele do not shows its effects when paired with a dominant allele
IV. A dominant allele is always better for an organism

Test cross is a cross between

The alternate forms of a gene is called

Chromosomal theory of inheritance is introduced by?