1. Karyotypes

2. Karyotypes
Definition - A picture of chromosomes cut out and grouped together.
Typical human karyotype would look like…

5. Is the following individual male or female?

7. “Normal” Human Female Why? Because she lacks a “Y” chromosome.

9. Is the following individual male or female?

11. “Normal” Human Male Why? Because he has a “Y” chromosome.

13. Karyotypes An embryo without an X chromosome is incapable of survival
Definition - A picture of chromosomes cut out and grouped together.
Typical human karyotype:
46 total chromosomes
23 total pairs
44 autosomes
2 sex chromosomes (XX or XY)
An embryo without an X chromosome is incapable of survival

14. What appears abnormal about the following karyotype?

17. Monosomy X Female Turner Syndrome
Pectus excavatum (picture)
Short stature
Webbed neck
Abnormal eye features (drooping eyelids)
Absent or retarded development of
secondary sexual characteristics
that
normally appear at puberty
Infertility
Dry eyes

18. What appears abnormal about the following karyotype?

21. Trisomy 21 Down Syndrome Female

22. What appears abnormal about the following karyotype?

25. Trisomy 13
They usually do not live past age one.

26. What appears abnormal about the following karyotype?

29. XXY Klinefelter Syndrome Tall (around six feet)
Hypogonadism (small testes)
Unable to produce sperm (infertile)
Sparse facial and body hair
Gynecomastia (male breast disorder)

30. What appears abnormal about the following karyotype?

33. XYY Jacob’s Syndrome Tend to have a wiry-build Severe acne
Minor birth defects
Minor outturning of the elbows
Fertility is not affected