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प्रश्न
What is male heterogamety?
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उत्तर
Male heterogamety (XY males) is a type of sex determination in which males produce two different types of gametes. For example, human males produce two kinds of sperms that is sperm with X- chromosome and sperms with Y- chromosome.
संबंधित प्रश्न
If X chromosome is inherited from mother and Y from father, the offspring will be male.
Differentiate between ‘ZZ’ and ‘XY’ type of sex-determination mechanisms.
Which of the following combinations of sex chromosomes produce a male child : XX or XY?
If a normal human cell has 46 chromosomes, how many chromosomes will be there in a human (i) sperm cell, and (ii) zygote?
Which combination of genes in the zygote will produce children with blue eyes?
Does the sex of the child depend on the father or it is just a matter of chance? Discuss.
Match the items of Column I with Column II:
| Column I | Column II | ||
| i. | XX-XO method of Sex Determination | a. | Turner syndrome |
| ii. | XX-XY method of Sex Determination | b. | Female heterog ametic |
| iii. | karyotype-45 | c. | Grasshopper |
| iv. | ZW-ZZ method of Sex Determination | d. | Female homogametic |
Chromosomal constitution of normal human females can be written as ______.
The maleness of a child is determined by
Twins are born to a family that lives next door to you. The twins are a boy and a girl. Which of the following must be true?
