Biology Exam

The phenomenon of genetic drift exists when:

The term” industrial melanism” describes

Variable regions in antibodies are located:

The great diversity of antibodies variable regions is possible due to somatic recombination which is:

A human individual with the Y chromosome:

In Drosophilia melanogaster female sex is determined when:

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

The division process of primary oocytes is stopped:

The genetic diversity of gametes from the germ cells line takes place in the gonads at:

If F1 hybrids of Limnaea peregra have sinistrally coiled shells then the correct
genotypes of the parental generation are:

In most cases the diseases inherited in mitochondrial way belong to:

It is NOT truth that human mtDNA:

Choose correct order of the cell cycle phases:

Complementary genes ARE NOT an example of interaction in which:

The number of linkage group in Pisum sativum is:

Which of the following karyotypes is characteristic for Edwards syndrome?

Angelman syndrome is:

Choose incorrect statement:

Which of these diseases are caused by point mutation of an X-chromosome?

Mutation of the gene coding for dystrophin, localized in the short arm of X chromosome (Xp21,2) results in:

Autosomal dominant diseases include:

Mutation is gene encoding fibrillin (FBN1) causes:

Choose incorrect description of autosomal recessive inheritance:

The occurrence of karyotypes being the result of the multiplication of total number of chromosomes (not found in
human) is called:

The human Karyotype does NOT contain the following chromosomes

AUG codon is changed to UAG codon it is:

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

The order of packing levels of chromatin in eukaryotes is

Heterochromatin is a:

The majority of eukaryotic chromatin proteins are histones - small proteins possessing:

Number of barr bodies in cells of women with Turner syndrome, resulting from meiotic nondisjunction is:

Among statements regarding the process of x chromosome inactivation point false sentence:

Which of the following sentences is incorrect

During meiosis the homologous chromosomes are separation during:

Transcription factor TFIIH

There are three types of domains used in regulation of eukaryotic gene expression

The “leucine zipper” structure is built of

The proteins that regulate the gene expression bind to nitrogen bases of the appropriate DNA fragment using the
following bonds:

DNA sequence located between promoter and structural genes in trap operon is called:

In catabolite repression of lac operon: