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Question
XO type of sex determination and XY type of sex determination are examples of ____________.
Options
Male heterogamety
Female heterogamety
Male homogamety
Both Female heterogamety and Male homogamety
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Solution
XO type of sex determination and XY type of sex determination are examples of Male heterogamety.
RELATED QUESTIONS
Explain sex determination in human beings.
The two versions of a trait (character) which are brought in by the male and female gametes are situated on :
(a) copies of the same chromosome
(b) sex chromosomes
(c) two different chromosomes
(d) any chromosomes
Choose the correct answer :
Human sex chromosomes are __________
Which of the following is incorrect regarding ZW-ZZ type of sex determination?
What is Lyonisation?
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 |
Human offspring’s sex is determined ______
Which of the following determines the sex of a child?
Sex of an individual is determined by different factors in various species. Some animals rely entirely on the environmental ones, while in some other animals the individuals can change their sex during their life time indicating that sex of some species is not genetically determined. However in human beings, the sex of an individual is largely determined genetically.
- In what way are the sex chromosomes 'X' and 'Y' different in size? Name the mismatched pair of sex chromosome in humans.
- Write the number of pair/pairs of sex chromosomes present in human beings. In which one of the parent (male/female) perfect pair/pairs of sex chromosome are present?
- Citing two examples, justify the statement "Sex of an individual is not always determined genetically".
OR
Draw a flow chart to show that sex is determined genetically in human beings.
