Write the possible genotypes Mendel got, when he crossed F₁ tall pea plant with a dwarf pea plant.

Why is a plant with genotype Tt referred to as heterozygous'?

Why in a test cross, did Mendel cross a tall pea plant with a dwarf pea plant only?

What will be the percentage of gametes ry , formed by an individual with genotype RrYy ?

What will be the karyotype of an individual who has developed from the zygote formed by an XX egg fertilized by a Y sperm ?Name the abnormality with which he will be suffering from .

Show through a cross all the possibility of the genotypes of the progeny when a man with blood group B marries a women with blood group A, both heterozygous for the trait.

How will you find the genotype of an organism exhibiting a dominant phenotype trait ?

Write the sex chromosomes compliment of the following.
a) Human female & male
b) Male and Female grasshopper

In sexually reproducing organisms what is the contribution of the parents to their offspring \(\frac{1}{2} \) of their genes or \(\frac{1}{4}\) of their genes

The genes for haemophilia are located on chromosome of humans. It is normally impossible for a haemophilic father to pass the gene to his son . Why.

When you will find the percentages of crossing over will be more
a) When linked genes are located close to each other.
b) When linked genes are located far apart from each other.
c) When genes are not linked.

A mother with blood group ‘O’ has a foetus with blood group ‘A’, father is also ‘A’ If the genes of the both the parents are inherited then the foetus should be a mixture of both the parents i.e. half ‘O’ and half ‘A’. Since the foetus is ‘A’, how can you explain the situation?

The genetic disorders can be grouped under two broad categories- Mendelian disorders And chromosomal disorders which one of two can be traced in a family by pedigree chart? Name two such disorders.

Turner's syndrome is a sterile female generally with normal intelligence and known viable monosony in humans. Is the combination '44+YO' is also viable. Justify?

Name a cross whose progenies can easily be analyzed to predict the genotype of the organism under observation?

Mendel followed a definite sequence of steps in making a cross between tall and Dwarf pea plants to study the inheritance of one gene. Mention them in proper order.

Which of the following is a recessive or dominant trait in garden pea?
a) Tall stem b) Wrinkled seeds c) Green color seed coat d) Constricted pod.

If the frequency of a parental form is higher than 25% in a dihybrid test cross, what does that indicate about two genes involved?

Multiple allelism can be investigated only in populations.  Justify.

Which law of inheritance of Mendel is universally acceptable and without any exception? State the law.

Name and state the law of Mendel, which explains the expression of only one of the parental characters in the F₁ generation of a monohybrid cross.

What is the proof for or what indicates that the characters Mendel studied did not show blending?

When a tall pea plant was self-pollinated, one-fourth of the progency were dwarf.  Give the genotype of the parent and the dwarf progenies.

Why do certain genes tend to be inherited together in a cell at the time of cell division?

In a test cross progeny of pea plats, all were bearing violet flowers. Give the genotypes of the parent pea plants.