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State True or False (i) In birds, both...

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 .

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(i) True
(ii) True
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Explore conceptually related problems

Write the chromosomal basis of sex determination in birds.

Which type of sex determination is found in birds ?

State true or false : (i) Unisexual flowers occur in china rose (ii) Monoecious condition in lower plants is absent.

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.

A : XO type sex determination is found in large number of insects. R : ZW type sex determination is found in birds.

In which of the sex determination both male and female same number of chromosomes ?

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. 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.

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 .

AAKASH INSTITUTE ENGLISH-PRINCIPLES OF INHERITANCE AND VARIATION-Try Yourself
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  2. (i) Human beings have three alleles for ABO blood grouping |A||B| an...

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  3. In a cross between two pea plants with genotypes TtYY (tall plant wit...

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  8. Fill in blanks (w.r.t. experimental material used by Morgan) (i) Fem...

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  10. State True or False : (i) In fruit fly genes of white eye and norm...

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  11. Which of the following statement for the grasshopper is incorrect ? ...

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  12. In third pregnancy of a human couple what will be probability of hav...

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  13. State True or False (i) In birds, both the sexes possess two sex chr...

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  14. Fill in the blanks (i) In chicks "" individual produces two differe...

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  15. State True or False (i) Chromosomal aberrations are commonly observe...

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  16. Fill in the blanks . (i) Deletions and insertions of base pair of D...

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  18. In the following pedigree chart, the mutant trait is shaded black. The...

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