Sex determination in humans | Heredity | Biology Class 10 | Khan Academy
Khan Academy India - English・4 minutes read
Sex in humans is determined by a pair of sex chromosomes, with females having XX and males having XY. Offspring sex is determined by the sperm cell, with Y chromosomes resulting in males and X chromosomes resulting in females, making sex determination random and not influenced by parents.
Insights
- Sex in humans is determined by the combination of sex chromosomes: XX for females and XY for males, where fertilization with an X chromosome leads to a female offspring, while fertilization with a Y chromosome results in a male.
- The sex of the offspring is solely determined by the sperm cell, with a 50/50 chance of being male or female, as sperm carrying a Y chromosome produces a male and sperm carrying an X chromosome produces a female, highlighting the random nature of sex determination not influenced by parental control.
Get key ideas from YouTube videos. It’s free
Recent questions
How is sex determined in humans?
By sex chromosomes.
What determines the sex of offspring?
Sperm cells.
Is sex determination random?
Yes.
What chromosomes do females have?
XX.
What chromosomes do males have?
XY.
Related videos
SciShow
Why Y Chromosomes Might Disappear
Perrine DOUHERET
SVT - cours - La transmission du programme génétique de génération en génération
instyn education
Grade 8 | Science | Reproduction in Animals | Free Tutorial | CBSE | ICSE | State Board
Infinity Learn NEET
Male Reproductive System | Don't Memorise
Khan Academy
Sexual reproduction and genetic variation | Middle school biology | Khan Academy
Summary
00:00
"Sex Determination: Chromosomes Determine Offspring Gender"
- Humans' sex is determined by a pair of sex chromosomes, with females having XX chromosomes and males having XY chromosomes. When a sperm with an X chromosome fertilizes an egg, the offspring is female, while fertilization with a Y chromosome results in a male.
- The chances of offspring being male or female are 50/50, as sperm cells determine the sex of the baby. Sperm carrying a Y chromosome leads to a male offspring, while sperm with an X chromosome results in a female, showcasing that sex determination is random and not controlled by the parents.
