Chromosomes and Sex Determination

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5 Questions

What are the two chromosomes that decide whether you are male or female?

XY or XX

What combination of chromosomes allows female characteristics to develop?

XX

What causes male characteristics?

Y chromosome

What is the probability of a sperm cell getting an X-chromosome during meiosis?

50%

What are genetic diagrams used for?

To show all the possible genetic outcomes when crossing different genes or chromosomes.

Study Notes

Sex Determination

  • Sex chromosomes are X and Y, which determine whether an individual is male or female
  • XX combination of chromosomes leads to the development of female characteristics
  • XY combination of chromosomes leads to the development of male characteristics

Chromosome Inheritance

  • During meiosis, a sperm cell has a 50% probability of receiving an X-chromosome

Genetic Diagrams

  • Genetic diagrams are used to illustrate the inheritance of traits and predict the probability of certain characteristics being passed down from one generation to the next

Learn about how chromosomes determine whether an individual is male or female. Explore the role of X and Y chromosomes in controlling characteristics and influencing sex.

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