Biology Exam

BT corn is a transgenic plant:

Asymmetric cutting o DNA by restriction enzyme is:

the disandvantage of bacteria as organisms used to produce eukaryote .. protein is:

To amplify a single gene fragment the following number of primer type is used in PCR:

Gel electrophoresis can be used to fractionate

Elongation time in PCR is:

Hardy Weinberg equlibrium can be assumed to exist when:

Genetic drift occures because of:

Choose the correct phenotypic ratio in F2 which is observed for complementary genes:

In some dogs breed the uniform coat (A) dominates spotted, and brown (B) dominates black. What is the genotype of the male dog crossed with a black spotted bitch, if obtained puppies are black and brown but all spotted. 

Shell colour of the freshwater snail (Phys heterostropha) is determined by two genes. Product of the dominant allele of the one gene converts I into component II. The dominant variant of the second gene encodes a functional version of the enzyme Y. Brown shells are present in individuals wih the following genotypes:

In a cross between plants heterozygous for four different genes, which assort indipendently, what function of the offspring will be homozygous for all four genes?

The diversity of antibody´s variable fragments is achieved by:

Polygenes are responsible for:

A green round pea plant variety was crossed with yellow wrinkled pea plant variety and next the F1-hybrid was test-crossed. The following genotypes ocurred in the F2 generation:

The law of independent assortment states that:

An individual with the karyotype 48,XXXY is:

Point mutation in DMD gene located on X chromosome causes:

Which of this diseases are caused by structural aberration?

Cleft palate and/or eye defects are typical for:

The deletion of the 5p 15,3 is observed in:

The characteristic clinical feature of Bloch-Sulzberger syndrome is:

What is the probability that a healthy father and a mother who is carrier of haemophilia will have a haemophilic son?

Favism is associated with:

Xerodermma pigmentosa is an example of a disease caused by:

Absent or reduced synthesis of the globin chain causes:

The characteristic feature of alkaptonuria is an accumulation of

Galactosaemia is the result of:

Cystic fibrosis, caused by mutation of recessive alleles in chromosome 7 results in the impairment of

A man is the carrier of phenylketonuria, his wife does not have this disease and is not a carrier. The probability that their children will suffer from phenylketonuria or will be carriers of this disorder is:

The genetic cause of sickle cell anaemia is:

What is the probability of birth of a child suffering from alkaptonuria if healthy parents have a son with symptomm of the disease.

Both parents are heterozygotes with Marfan syndrome and have a healthy son, determine the probability of birth of another healthy child.

Choose the incorrect discription associated with Alzheimer:

Problems with walking balance, frequent jerky movements of arms, feet, neck and intelectual deterioration are characteristic symptoms of:

Choose the incorrect criterion of inheritance of autosomal dominant disease:

the karyotype that does not occure in human is

Deletion of short arm of 7th chromosome in female describes karyotype:

in humans sex determination:

Which of the following chromosomes are present in a karyotype