X chromosome inactivation normally take place in both male and female

which type of chromosomes is not seen in human cell

(a)  

Chromosomes are classified as (a)   when the centromere is very close to the center

mark the correct statement about the pseudogenes:

(a)  

Telomeres are usually rich in which nucleotide?

(a)  

the risk of having a baby with Down syndrome is greater among mothers age 35 and older.

Turner syndrome is caused by a missing or incomplete X chromosome.

Name of the Trisomy 18 is:

Match the incorrect statement

Autosomal trisomies is associated with following characteristic except of

stocky build, arms that turn out slightly at the elbow, a short webbed neck, and a low hairline at the back of the neck---Common physical symptoms of

(a)  

in male sex chromosome aneuploidy can be due to abnormal numbers of

(a)  

Phenylketonuria PKU is an autosomal dominant disorder

Presence of a 'cherry-red' spot in the retina characteristic symptom of Tay-Sachs disease

PKU is caused by a mutation in a

(a)  

A baby girl presents with bilateral inguinal masses that are thought to be hernias but are found to be testes in the inguinal canals. What is her disorder?

Which disease is treated by a low-phenylalanine diet

(a)  

Tay-Sachs disease shows autosomal recessive inheritance. Parents of a newly diagnosed affected child are referred for genetic counseling. It would be correct to tell them that:

allolactose ia an co-repressor for lac operon

Tryptophan, the end-product of the enzymes encoded by the trp operon, therefore acts as a

In prokaryotes the regulation of gene expression mostly takes place at the level of

Enhancers have the ability to greatly increase the expression of genes in their vicinity.

Gene regulation in eukaryotes may be influenced by

Appropriate cyclin are synthesized at the start of each phase of the cell cycle and destroyed before the cell proceeds to the next phase:

The different forms of a gene are known as alleles

If Mr. and Mrs. Fecundity, both having blood type B, have 12 children, 3/4 of whom are type B and 1/4 of whom are O, what are the genotypes of the parents?

A family of six includes four children, each of whom has a different blood type: A, B, AB and O. What are the genotypes of parents for this trait?

A man with blood type B, with one parent of blood type O, marries a woman with blood type AB. What will be the theoretical percentage of their children with blood type B?

Phenotypic ratios of 3:1 in the offsprings explain the principle of _____.

Rh+ was found to be dominant over the absence of the blood factor (Rh). Under normal Mendelian inheritance, which of the following statements is FALSE?

Pleiotrophy is- when one gene influences multiple phenotypic traits

Which of the following is an example of non-Mendelian inheritance?

The inheritance of an ABO blood group illustrates:

Phenotypic ratios of 1:2:1 in the offsprings explain the principle of _____.

A man and his wife both have normal color vision, but a daughter has red-green color blindness, a sex-linked recessive trait. The man sues his wife for divorce on grounds of infidelity. Can genetics provide evidence supporting his case? (does infidelity happen?)

D and G group of chromosomes bear an 's' (satellite) encodings r RNA gene

The X is a large submetacentric chromosome

females with a 46,XY karyotype have lost

Centromeres - primary constriction site in the chromosomes.

The type of Polymorphism, that consists of stretches of DNA composed of units of two, three or four nucleotides repeated between one and few dozen time at a particular site is:

For DNA fingerprinting largely used

The human genome contains approximately

which of the following correct regurding Telomeres

Patients with Kleinfelter Syndrome are typically female

which of the listed pregnant women has high risk having a Down syndrome fetus.

Which syndrome is a syndrome caused by the deletion of a small piece of chromosome 22?

Which of the following is the cause of complete monosomy?

Which of the following is not a symptom of Turner's syndrome?

Number of Barr bodies in XXXX female is

Rett syndrome X-Linked Dominant Disorders with equal Male and fimale Lethality

Myotonic dystrophy -DM1 is caused by the expansion of the trinucleotide repeat CTG in the 3.-untranslated region - 3′ UTR- of the DMPK gene.

Rett syndrome and some variant forms of the condition are caused by mutations in the

causes of Congenital Adrenal Hyperplasia (CAH) is a deficiency of 21-hydroxylase which is produced in

mutations in an X-linked gene, MECP2 cause of

Which of the following diseases is NOT inherited as an autosomal recessive?

The TYR gene provides instructions for making an enzyme called tyrosinase. Mutation in this gene reason for:

If the hemophiliac male mates with a normal female, all the sons will effected

in hydrops fetalis with Hb Bart's 2 α globin loci are deleted

HbF (α2γ2) - In adults the normal range of Hb F is about 1%.

The mitochondrial genome is linear and enveloped

The mitochondrial genome contains 13 proteins coding genes

The humans gemone express approximately ------TFs(transcription factors)

Diseases of multifactorial inheritacne result from a complex interaction of the effects of multiple different genes with environmental factors.

If two genes experience independent assortment, which assumption is most likely true?

The genes that Mendel worked with were

Obesity, excessive and indiscriminate eating habits, small hands and feet, short stature, hypogonadism, mental retardation characteristic symptoms of

Hayflick limit defines the number of possible cell divisions and depends on the length of chromosomal telomeres, which decreases in standard cells with every cell division

Short stature, intellectual disability, 'elfin like' facial features, a stellate pattern to the iris, characteristic for

During the meiosis X and Y chromosome exchange

In case of pseudoachondroplasia(a type of dwarfism) phenotype, genotype is

Histone modifications includes:

Hemophilia is a classic X-linked recessive disorder in which the blood fails to clot normally.

Sex-linked recessive traits can be seen only in men, because they result from genes located on the X chromosome.

Polar substances are ________; nonpolar substances are_________.

Hydrophilic amino acids will always move to the-------- of a protein.

(a)  

DNA analysis in Duchenne or Becker muscular dystrophy demonstrates a deletion or duplication in the dystrophin gene.

The β-globin mutations have no prenatal consequences, because γ-globin is the major β-like globin before birth.

In sickle cell syndrome HBS illustrated as

Characteristic of sickle cell syndromes

One mitochondria contains dozens of copies of its mitochondrial genome.

Operon is a group of genes regulated and expressed together as a unit, operator is the place near to promoter, to which a repressor protein binds.

Regarding to the X-linked genes males are?

If the poly-A tail is shortened to less than about 30 nucleotides, the mRNA becomes unstable.

In normal cells, the p53 protein level is low.

Genotype refer to the genetic make-up of an organism.

Suppose a white-furred rabbit breeds with a black-furred rabbit and all of their offspring have a phenotype of gray fur. What does the gene for fur color in rabbits appear to be an example of?

Smallest chromosome in the human karyotype is

Here is normal human karyotype A = 6, B = 4, C = 16, D = 6, E = 6, F = 4, G = 4 To whom it belongs:

Homozygotous condition means, identical alleles of the same gene.

Following characteristic except of

Cri-du-chat syndrome in humans is caused by the

The reason why haemophilia is more commonly observed in human males than in females is due to

Why are genetic disorders such as haemophilia and Duchenne muscular dystrophy more prevalent in males than females?

A colour blind girl is rare because she will be born only when

Tetramer is called Hb H in case

The gene that code for the beta subunit of the hemoglobin protein allocated:

Sickle cell anemia is:

All of the following are examples of mutations which have been observed on a b-thalassemia allele except:

Minisatellite polymorphism is largely used for DNA fingerprinting.

The α chain of the hemoglobin has --- amino acids residues:

The genes for the β and β-like chains are clustered tandemly on

How do Prader-Willi syndrome and Angelman syndrome differ?

Which of them is not X-linked condition:

Protein complexes that break down proteins are called proteasomes.

p53 proteins, have three major functions: growth arrest, DNA repair and apoptosis.

In case of ABO blood group A alleles is dominant over B alleles.

Single nucleotide polymorphism are common and are observed on average once every 1000 base pair in genome.

Which symptom in an infant or young child might mean CF?

Albinism is a congenital disorder resulting from the lack of which enzyme?

Which of the following is the example triplet repeat disorders?

Acetyl groups can be added to both arginine and lysine residues in histones H3 and this change has been correlated with gene activity.

Characteristics controlled by more than one gene, each of which may have two or more alleles, is known as codominance.

What if the cell is found in the environment, that is rich in lactose and glucose?

Gene regulatory elements are specific cis-acting DNA sequences that are recognized by trans-acting transcription factors.

Proteins that are involved in the regulation of the cell cycle