List of top Zoology Questions on Genetics asked in AP EAPCET

Study the following regarding human genome project and identify the correct statements:
I. The largest known human gene is located on X-chromosome.
II. Chromosome 1 has the lowest number of genes.
III. Less than 2 percent of the genes code for proteins.
IV. The human genome contains 3164.7 billion nucleotide bases.

Assertion (A): Genetic drift tends to reduce the amount of genetic variation within the population.
Reason (R): In genetic drift alleles with low frequencies are removed in a population.

Study the following and pick up the correct statements:
In DNA fingerprinting, DNA is cut into small pieces at specific sites by restriction endonucleases.
Transfer of DNA strands on to the nylon membrane is called southern blotting.
The largest known human gene codes for the protein dystrophin.
Least number of genes are located in Y-chromosome.

Match the following:

Method of sex determination

A) XX – XY
B) XX – XO
C) ZW – ZZ
D) ZZ – ZO

Example

I) Grasshoppers
II) Birds
III) Human beings
IV) Moths
V) Honey bees

Identify the correct match:

Study the following statements and pick up the incorrect statements.
I. Haemophilia is an X-linked disorder due to dominant genes.
II. Inheritance of colour blindness follows the cris-cross pattern.
III. Haemophilia A and Haemophilia C are X-linked disorders.
IV. Y-linked genes are called holandric genes.

If both parents have B blood groups (both are heterozygous), the expected blood groups in their children.

Study the following regarding genetic disorders and identify the correct statements.
I) Cystic fibrosis follows an autosomal dominant inheritance pattern.
II) Thalassemia is caused by mutation affecting haemoglobin synthesis
III) Sickle cell anaemia results from a point mutation in the β-globin gene.
IV) Phenylketonuria (PKU) is an X-linked recessive disorder.

Match the following: