Pedigree Charts

Pedigree Charts

By Z Howard

Multiple Choice

There is no differences between family trees and pedigree charts.

• true

• false

• Who knows?

Multiple Choice

How does a geneticist use pedigrees?

• to replicate identical strings of DNA

• to trace the inheritance of traits over generations of families

• to create genetic crosses

Multiple Choice

In a pedigree chart, a male is represented by a

• circle

• square

• rhombus

• triangle

Multiple Choice

In a pedigree chart, a female is represented by a

• circle

• square

• rhombus

• triangle

• rectangular prism

​What are the types of chromosomes?

• ​Autosomes

  • the first 22 homologous pairs of chromosomes are not sex-determining

• ​Sex Chromosomes

  • ​XX - female

  • ​XY - male

Autosomal traits

all the other genes in the body that are not sex-linked.

Sex-linked Trait

Traits controlled by genes located on sex chromosomes. Also known as X-linked trait. X-link traits are most likely recessive.

Multiple Choice

Sex-linked genes are genes on

• the Y chromosome only.

• the X chromosome only

• the X and Y chromosomes.

Multiple Choice

If the male or female has the trait listed in the pedigree chart, then the circle or square is _________________.

• empty

• fully shaded

• half-shaded

• spotted, like a leopard

Multiple Choice

If the male or female does not have the trait listed in the pedigree chart, then the circle or square is _________________.

• empty

• fully shaded

• half-shaded

• spotted, like a leopard

Multiple Choice

A heterozygous genotype is represented by a(n) ____________ circle or square.

• empty

• fully shaded

• half-shaded

• invisible

Pedigree symbols

• Circles represent females

• Squares represent male

• Carriers of traits will be half shaded

• Horizontal line between male and femail mean marriage

• Vertical lines show offspring

• Shaded in fully mean trait is shown.

Multiple Choice

A horizontal line in a pedigree chart between two parents represents

• mating (reproduction)

• best friends

• frenemies

• offspring

Multiple Choice

A vertical line in a pedigree chart represents

• parents

• offspring

• pets

• mascots

Multiple Choice

An individual with heterozygous genes is represented by a(n) _____________ circle or square.

• empty

• fully shaded

• half-shaded

• striped (like a zebra)

Multiple Choice

A male with brown eyes has homozygous genes and is part of a pedigree chart for brown eyes. Which symbol would he have?

• fully shaded circle

• fully shaded square

• empty circle

• empty square

• half-shaded square

Multiple Choice

A female with dimples has heterozygous genes and is part of a pedigree chart for dimples. Which symbol would she have?

• fully shaded circle

• fully shaded square

• empty circle

• half-shaded circle

• half-shaded square

Multiple Choice

This pedigree chart shows ____________ having the trait.

• three males

• three females

• ten males

• two females

• pedigree charts are stupid

Multiple Choice

The following pedigree chart shows _______ females and ______ males that have the trait.

• 7, 3

• 4, 4

• 3, 2

• 3, 3

• 57, 93.5

Multiple Choice

How many children did Karen and Dan have?

• None

• 1

• 2

• 3

Multiple Choice

The following pedigree chart shows _______ females and ______ males that DO NOT have the trait.

• 7, 3

• 4, 4

• 3, 2

• 3, 3

• 57, 93.5

Multiple Choice

A pedigree chart tracks ________ specific trait(s).

• one

• two

• three

• 15