What Will Be the Phenotype of Progeny, If a Carrier Haemophilic Female Marries a Normal Male? - Biology


What will be the phenotype of progeny, if a carrier haemophilic female marries a normal male?



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2014-2015 (March)


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Give the genotype of Turner’s syndrome.

If only one 'X' chromosome is found in a female person, which of the following symptoms she will show?

  1. epicanthal skin fold
  2. webbing of neck
  3. small testis and absence of spermatogenesis
  4. presence of simian crease on the palm

Give any 'two' names of X-linked diseases

Why are color-blindness and thalassaemia categorised as Mendelian disorders? Write the symptoms of these diseases seen in people suffering from them.

Give an example of a human disorder that is caused due to a single gene mutation.

Why is pedigree analysis done in the study of human genetics? State the conclusions that can be drawn from it.

What is ‘syndrome’?

In which of the following disorders number of chromosomes present is 47?
(A) Turner’s syndrome
(B) Cushing’s syndrome
(C) Acquired Immuno - Deficiency Syndrome
(D) Down’s syndrome

During a medical investigation, an infant was found to possess an extra  chromosome-21. Describe the symptoms the child is likely to develop later in the life.

The genotype of a person withTumer's syndrome will be:
(i)   44+XXY
(ii)  44+XYY
(iii) 44+XO
(iv) 44+XXYY

Attempt any TWO of the following: 

‘The gene for sickle cell anaemia in homozygous condition is lethal and produces sickle cell trait in heterozygous carrier’. Explain. 

Name a disorder a human suffers from as a result of the monosomy of the sex chromosome. Give the karyotype and write the symptoms.

In human beings 45 chromosomes/single X/XO abnormality causes ______.

Give a detail account of thalassemia.

What are the different characters that develop due to Klinefelter's syndrome?

Mention the symptoms of Phenylketonuria.

A male rabbit of genotype 'AABBDDEE' is crossed with a female rabbit of genotype 'aabbddee' to produce F1 hybrid offspring. How many genetically different gametes can be produced by this F1 hybrid?

Read the following statements and select the correct option.

i. Genetic disorders are broadly categorised as, Mendelian disorders and chromosomal disorders.

ii. Mendelian disorders are caused due to absence or excess of one or more chromosomes or their abnormal arrangement.

iii. Chromosomal disorders are mainly caused due to alteration or mutation in the gene.

Identify the characteristics that are observed in an individual suffering from Klinefelter syndrome.

i. Gynaecomastia, under developed testis and no spermatogenesis.

ii. Voice pitch is harsh.

iii. They are tall with long arms.

Identify I and II in the given diagram of chromosome.

Match Column I with Column II and select the correct option:

  Column I   Column II
p. Pleiotropy I. More than two alleles occur at the same locus on homologous chromosomes
q. Multiple alleles II. Expression of both the alleles m heterozygous condition
r. Polygenic III. Multiple effect of single gene
s. Co-dominance IV. Single phenotypic character influenced by more than two genes

Thalassemia and sickle cell anaemia are caused due to a problem in globin molecule synthesis. Identify the correct statement from the following.

Identify the disease caused by an autosomal primary non-disjunction.

Following list indicates various genetic diseases. Identify the diseases that are not caused due to single gene defect.

Huntington's chorea, alkaptonuria, Sickle cell anaemia, Down syndrome, thalassemia, Taysachs disease, Turner syndrome, cystic fibrosis, haemophi Lia, Klinefelter syndrome, albinism

Identify the option that correctly represents the number of chromosomes in Down syndrome.

Thalassemia and sickle cell anemia are caused due to a problem in globin molecule synthesis. Select the correct statement.

If a colour-blind man marries a woman who is homozygous for normal colour vision, the probability of their son being colour-blind is ______.

Extra chromosome ‘X’ is present in which one of the following cases?

Down’s syndrome is due to ______.

Klinefelters’ syndrome is characterised by a karyotype of ______.

Which of the following is called as Royal disease?

Clotting of blood is to ______.

The practice of analyzing inheritance patterns in human beings is called ______

The technique exployed in human genetic counselling is:

Why is the frequency of red-green colour blindness is many times higher in males than that in females?

Fused ear lobes appear in the progeny due to an autosomal recessive gene. Work out the genotypes of number in the given pedigree.


Short stature in females, webbed neck absence of menstrual cycle and sterility are characteristics which of the following disease?

What is the genotype of Turner's Syndrome?

Mention any one symptom of Turner's syndrome.

Describe Turner's syndrome.


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