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X-body of Henking was
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Important Questions on Genetics: Mendel’s Laws of Inheritance and Sex Linked Inheritance of Diseases
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In a certain taxon of insects (Example: Cockroach), some have chromosomes and the others have chromosomes. The and chromosomes bearing organisms are _________
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Flow chart of sex determination in humans is given below. Information to be filled in the blanks a, b and c respectively are :
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In which of the organism, the following type of sex determination is possible
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type of sex determination can be found in:
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Haplo-diploid insects have diploid females from fertilized eggs but haploid males from unfertilized ones. Such a haploid male with red eyes is crossed with a white-eyed female. Assuming that the red-eye colour mutation is dominant over the white-eye colour, which one of the following statements is true?
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From the chromosomal complements given below, identify the one which shows female heterogamety.
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Select the incorrect statement.
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Number of autosomes in human sperm is:
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Read the following statements :-
a. In both grasshopper and Drosophila males have only one X chromosome in their cells.
b. I gene of Lac operon is expressed only in presence of lactose
c. Being repetitive, satellite DNA forms multiple copies of same polypeptide
d. Random arrangement of chromosomes at metaphasic plate of meiosis I is the basis of independent assortment of genes.
The correct statements are
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Match the following columns.
| Column-I | Column- II | ||
| (A) | XX-XY method of sex determination | (1) | Female heterogametic |
| (B) | 1.5 ratio | (2) | Turner’s syndrome |
| (C) | Karyotype 45 | (3) | Male heterogametic |
| (D) | ZW-ZZ method of sex determination | (4) | Metafemale |
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The chromosome complement of the somatic cells in all human being is
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Heterogametic male condition does not occur in
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How many chromosomes are present in an unfertilized egg
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In the XX-XO type of sex determination
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ZZ/ZW type of sex determination is seen in
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Gynandromorph or sex mosaic is produced by
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Sex determination in an organism is given by then organism will be:
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Edward's syndrome, Patau's syndrome and Down's syndrome are due to:
