Home
Class 12
BIOLOGY
State True or False (w.r.t. following di...

State True or False (w.r.t. following diagrams)

(i) During gamete formation, only 50 % of the sperm bear X-chromosome.
(ii) Both male and female individuals have same type of sex chromosomes.

Text Solution

Verified by Experts

(i) True
(ii) False
Promotional Banner

Topper's Solved these Questions

  • PRINCIPLES OF INHERITANCE AND VARIATION

    AAKASH INSTITUTE ENGLISH|Exercise Try Yourself|27 Videos

  • PRINCIPLES OF INHERITANCE AND VARIATION

    AAKASH INSTITUTE ENGLISH|Exercise Exercise|60 Videos

  • PLANT KINGDOM

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT SECTION -D (Assertion - Reason Type Questions)|10 Videos

  • REPRODUCTION IN ORGANISMS

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT SECTION-D ASSERTION - REASON TYPE QUESTION IN THE FOLLOWING QUESTIONS, A STATEMENT OF ASSERTION (A) IS FOLLOWED A STATEMENT OF REASON (R ).|15 Videos

Similar Questions

Explore conceptually related problems

Which of the following statement for the grasshopper is incorrect ? (1) Male individual is heatrogametic due to two heteromorphic sex chromosomes (2) Sperm determines the sex of offsprings (3) Similar number of autosomes are found in male and female individuals both (4) All eggs contain autosomes as well as X-chromosome.

State True or False (w.r.t Chromosomal theory of inheritance) (i) Both chromosomes as well as genes occur in pairs in the somatic cells (ii) Both chromosomes as well genes segregate at the time of gamete formation such that complete pair is transmitted to a gamete (iii) Chromosomes are the carriers of Mendel's factors (iv) The paired condition of both chromosomes as well as Mendelian factors is restored during microsporogenesis .

State true or false : (i) In few lower plants both gametes are motile. (ii) Pollen tube can carry both male or female gamete.

State True or False (i) Chromosomal aberrations are commonly observed in cancer cells (ii) Mutation is the only phenomenon that leads to variation in DNA.

Fill the gaps of the following paragraph taking appropriate words from the bracket (first, second, meiosis, mitosis, 1:1, 1:2, gametes, male, female, 50%, 100%). In human beings male has XY and female has XX chromosome complement. The sex chromosomes segregate during the (a) division of (b)_____ The X-chromosome constitutes (c) _____ of produced sperms and (d)____ of eggs. If randomly mated, the ratio of sex expression is (e) _____. The sex of the offspring is determined by (f)____ of (g) _____.

State True or False (i) In birds, both the sexes possess two sex chromosomes. (ii) In butterflies sex determination is exactly opposite the condition found in grassnoppers .

The diagram given below is that of a developing human foetus. Study the diagram and then answer the questions that follow : (i) Label the parts numbered 1 to 3 in the diagram. (ii) Mention any two functions of the part labelled 2 in the diagram. (iii) Explain the significance of the part numbered 3 in the diagram. (iv) Define the term 'Gestation'. What is the normal gestational period of the developing human embryo? (v) Mention the sex chromosomes in a male and female embryo.

Consider the following four statements (I - IV) related to cell cycle, and select the correct option stating them as true [T] and false [F]. i. G_1 phase is a metabolically active stage of the cell cycle. ii. Interphase is the phase of actual cell division. iii. The number of chromosomes doubles in S-phase. iv. The cells that do not divide further exit the G_1 - phase to enter a quiescent stage.

Write the component statement of the following statement and check whether the compound statement is true or false (i) r : All real numbers are complex and all complex numbers are real (ii) s : All square are rectangle and all rectangle are not square (iii) t : 2 is a root of equation (x-2)^2=0 and 3 is a root of equation x^2-3x=0 (iv) Sphere is 3-D solid and square is 2- demensional figure

In the XX-XO type of sex chromosomes in (a) Females produce only one type of eggs (b) Females have only one X-chromosomes (c) Males have two X- chromosomes (d) Males are homogametic

AAKASH INSTITUTE ENGLISH-PRINCIPLES OF INHERITANCE AND VARIATION-Assignment (SECTION-D) Assertion-Reason Type Questions
  1. State True or False (w.r.t. following diagrams) (i) During gamete...

    Text Solution

    |

  2. A : Turner's syndrome generally does not occur in males. R : Foetus ...

    Text Solution

    |

  3. A : Sickel cell anemia occurs due to the point mutation. R : mRNA pr...

    Text Solution

    |

  4. A : Holandric traits are passed from one generation to the next genera...

    Text Solution

    |

  5. Assertion: Dominance is not an autonomous feature of a gene or the pro...

    Text Solution

    |

  6. A : The possibility of a female becoming a haemophilic is extremely ra...

    Text Solution

    |

  7. A : Polyploids with odd number of chromosomes are prepagated vegetativ...

    Text Solution

    |

  8. A : The hetrozygotic female for haemophilia may transmit the disease t...

    Text Solution

    |

  9. A : Non-allosomic genic determination of sex is found in bacteria. R...

    Text Solution

    |

  10. A : Non-allosomic genic determination of sex is found in bacteria. R...

    Text Solution

    |

  11. A : Crossing over is exchange of genetic material between non-homologo...

    Text Solution

    |

  12. A : Mendel gave postulates like "principles of segregation and princip...

    Text Solution

    |

  13. A : Test cross is the tool for knowing linkage between genes. R : Mo...

    Text Solution

    |

  14. A : Myotonic dystrophy is is caused by recessive mutant pleiotropic ge...

    Text Solution

    |

  15. A : In snapdragon, F(1) plants do not have red or white flowers. R ...

    Text Solution

    |

  16. A : en block inheritance of all genes located on the same chromosome m...

    Text Solution

    |

  17. A : Morgan's cross was conducted in Drosophila to locate genes on chr...

    Text Solution

    |

  18. A : Antlers in male deer are sex influenced traits. R : These are co...

    Text Solution

    |

  19. A : One drum stick nucleus is present in the neutrophil of normal fema...

    Text Solution

    |

  20. A : Blood group phenotype is controlled by presence or absence of anti...

    Text Solution

    |

  21. A : XO type sex determination is found in large number of insects. ...

    Text Solution

    |