Karyotype

Multiple Choice

Crossing over happens when part of the genetic information of one chromosome switches places with the genetic information from another chromosome. Another term for this process is

• genetic recombination

• genetic reduction

• a mutation

• nondisjunction

Karyotypes

Genetics

When do you think the picture is taken in the cell cycle?

Multiple Choice

Which phase of the cell cycle is when scientists take a picture to construct a karyotype?

• Interphase

• Prophase

• Metaphase

• Anaphase

Multiple Choice

The karyotype diagram below represents a human female with the genetic disorder known as Turner syndrome. Chromosomal analysis of this karyotype reveals the mutation is a result of

• a missing X chromosome

• a missing Y chromosome

• an extra 21 chromosome

• missing chromosome #9

Multiple Choice

The karyotype diagram below represents a human male. Chromosomal analysis of this karyotype reveals the abnormality in this karyotype is:

• a missing X chromosome

• a missing Y chromosome

• an extra 21 chromosome

• missing chromosome #9

Multiple Select

Homologous pairs:

(select all that apply)

• Have the same genes on them

• May have different alleles

• Each comes from one parent

• Combine to give you your genotypes

Multiple Choice

Do homologous chromosomes always look identical?

• Yes, same everything (shape, size, position, and bands)

• No, not quite (different positions but same band patterns and similar size)

Multiple Choice

By looking at the chromosomes how can you tell that this person is biologically female?

• Because there are two X chromosomes

• Because there are more chromosomes than in a male

Multiple Choice

By looking at the chromosomes is this individual biologically male or female? How do you know?

• Female, because they have two X chromosomes

• Male, because they have one X and one Y chromosome

Multiple Choice

What is the mutation in this persons chromosomes?

• There is only one X

• 7 is shaped like a hockey stick

• There's an extra 21

• 1 is too curved

Multiple Choice

This is called Turners syndrome, can you notice the mutation in the chromosomes?

• Both chromosomes 1 are bent

• There are too many chromosomes

• There are too many of chromosome 3

• There is no Y chromosome

Multiple Choice

These are the chromosomes of someone with Kleinfelters syndrome. What is different about their chromosomes?

• There is only one Y chromosome

• One of the 5th chromosomes is too curved

• There is an extra X chromosome

• There are too few chromosomes

Multiple Choice

This is known as Edwards Syndrome, can you identify the chromosomal mutation?

• Chromosomes 1 and 2 are bent

• There is no Y chromosome

• This persons chromosomes are normal

• There are 3 of chromosomes 18

Multiple Choice

Describe this karyotype.

• Male with no obvious disorder

• Female with no obvious disorder

• Female with disorder

• Male with disorder

Multiple Choice

Describe this karyotype.

• Male with no obvious disorder

• Female with no obvious disorder

• Female with disorder

• Male with disorder