Biology Exam

What is the probability of birth of left handed boy with red-green blindness, when his mother is left handed (recessive trait) and suffers from red-green blindness, and his father is right handed (homozygote) and healthy?

Between the meiosis I and meiosis II

A cell in G1 contains 8 chromosomes. How many bivalents would be present in a cell in prophase I of meiosis:

Nonsister chromatids crossing over regions of chromosomes move toward the ends of the tetrad during.

Spermiogenesis is a pocess of:

Choose the correct description of the number of chromosomes (n) and the amount of genetic material (c) for the secondary spermatocyte

the X chromosome inactivation does not include:

in humans development of testicles is stimulated by a product of gene:

translation begins when:

Trp operon switched on when:

In catabolite repression of lac operon:

The leader sequence in trp operon is located between

The "zinc finger" structure consists of:

Expression of genetic information can be regulated during:

CDKproteins participate in cell cycle regulation by:

the semi-conservative character of replication in prokaryotes was confirmed by experiment carried out by:

The RNA polymerase which appears in the nucleus is responsible for

The first step in formation of transcription initiation complex is binding of:

Which of the following processes occurs during posttranscriptional processing of the 3´end of the pre-mRNA?

.... the process of alternative splicing

Point the appropriate set of elements that take part in translation:

Anticodon loop of tRNA

Nucleosome constist of:

Bacterial chromosome is

In human the following types of chromosomes can be found:

Artificially synthesized RNA molecule contains exclusively uridine monophosphates distributed randomly. Maximal number of difference in RNA is:

Genetic code is non-overlapping. It means that:

Which of these E. coli enzymes removes RNA fragments on lagging strain?

Dysfunction of particular enzyme involved in replication in mice is associated with the fusion of the ends of chomosomes and an increased number of aneuploidy. The enzyme is:

Mitochondrial ribosomes...

Prokaryotic cell differs from eukaryotic cells by the absence of:

In Avery´s experiment the cells of rough pneumococcus strain were mixed with purified lysate of pneumococcus s strain cells. This experiment led to the conclusion that:

If DNA molecule contains 40% adenine, then it must contain also:

The aim of Hershey & Chase´s experiment was to show that:

The nucleus bases present in nucleic acids are divided into two groups:

Transgenic tobacoo containing gene of metallothionein is used for:

The proteins produced using biotechnology are (among others) :

Restriction enzymes are used to characterise certain fragments of DNA because:

Southern blotting is used to analyse the size of:

The frequency of the incidence of poor metabolizers ( concerning the activity of isoenzyme CYP 2D6 of 450
cytochrome) is