The Law of Independent Assortment

Q.

A Mendelian experiment consisted of breeding tall pea plants bearing violet flowers with short pea plants bearing white flowers. The progeny all bore violet flowers, but almost half of them were short. This suggests that the genetic make-up of the tall parent can be depicted as:

1. TTWW

2. TTww

3. TtWW

4. TtWw

Q.

What is an example of Mendelian inheritance?

Q.

What is Mendels third law?

Q. Define Law Of segregation and independent assortment

Q.

Define monohybrid cross.

Q.

MENDALS LAWS OF INHERITANCE .

Q.

In the pictorial table shown below, F-2 generation genotypes are shown whose parents are RrYy genotypes .( Round Yellow ). The new combination of F2 generation is the result of

1. changes in the allelic pairs during fertilization

2. separation of alleles and independent assortment during gamete formation & fertilisation

3. replication of alleles of traits in gametogenesis and fertilisation

4. combination of alleles and independent assortment during gamete formation

Q.

Chromosomal theory of inheritance explains

1. The random mutation causes changes in the DNA sequence of a gene

2. Chromosomes are the basis for all genetic inheritance.

3. Explains the mechanism underlying the laws of Mendelian inheritance.

4. Chromosomes are linear structures with genes located at loci

Q.

Law of independent assortment is ___.

1. Applicable to all genes on all chromosomes

2. Applicable to all dominant genes only

3. Applicable to those genes present on the same chromosome

4. Not applicable to genes present on the same chromosome

Q.

A homozygous tall plant (T) bearing red colored (R) flowers is crossed with a homozygous dwarf (t) plant bearing white (r) flowers.

State the Mendels law of Independent Assortment.

Mention the phenotypes of the offspring obtained in F₂ generation.

Q. Give three exception to Mendel's laws.

Q.

Mendelian recombinations are due to

1. Linkage of genes

2. Independent assortment of genes

3. Dominance of genes

4. None of these

Q. (a) What is meant by 'heredity'? What are the units of heredity.
(b) State Mendel's first law of inheritance.

Q. The laws put forward by Mendel are

1. Laws of germplasm
2. Laws of inheritance
3. Laws of recapitulation
4. Laws of origin of species

Q.

Define [3 MARKS]
1. Law of dominance
2. Law of segregation
3. Law of independent assortment

Q.

Mendelian recombinations are due to:

1. Mutations

2. Crossing over

3. Independent assortment of genes

4. Dominant characters

Q.

The hereditary principle derived from the results showing new combinations in addition to parental combinations in $F_2$ generation is

1. Law of independent assortment

2. Law of dominance

3. Law of segregation

4. Law of unit characters

Q.

Mendelian recombinations are mainly due to ___.

1. Dominant characters

2. Linkage

3. Independent assortment of genes

4. Mutations

Q. Mendel found that the reciprocal crosses yielded identical results. From that he concluded that

1. There is no dominance of any trait.
2. There is independent assortment of traits.
3. Sex plays a role in deciding the dominance of a trait.
4. Sex has no influence on the dominance of traits.

Q. State mandel first and second law of inheritance?

Q. Which of Mendel's laws states that when two homozygous individuals with one or more sets of contrasting characteristics are crossed, the characteristics which appear in F${}_1$ hybrids are dominant and those which do not are recessive?

1. Law of segregation
2. Law of independent assortment
3. Law of dominance
4. None of the above

Q.

Law of independent assortment is ___.

1. Applicable to all genes on all chromosomes

2. Applicable to all dominant genes only

3. Applicable to those genes present on the same chromosome

4. Not applicable to genes present on the same chromosome