MENDELIAN GENETICS REVIEW

This picture shows

• incomplete cominance

• codominance

• recessive disorders

• all of these

Tags

NGSS.HS-LS3-2

This picture would be helpful of you were looking for

• specific genes

• an extra chromosome

• damaged chromosome

• all of these

Tags

NGSS.HS-LS3-1

What makes this karyotype one of someone with Down's syndrome?

• There is an extra chromosome on set 21

• There are some HUGE chromosomes in set 1 to 5

• I am not qualified to assume a diagnosis

• all of these

The males of this pedigree are represented by a

• circle

• square

• dark cicle

• dark square

Tags

NGSS.HS-LS3-2

What was Queen Victoria's status in this pedigree chart?

• She had hemophilia

• she was a carrier of hemophilia

• she didn't have the recessive allele

• all of these

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Most of the traits expressed in a person's phenotype are determined by

• Y chromosomes

• X chromosome inactivation

• autosomal genes

• sex chromosomes

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A person with a heterozygous for a disorder caused by recessive alleles is a carrier of the disorder. A carrier is a person who

• does not have the disorder, but can pass it on to offspring

• can develop the disorder later in life, but cannot pass it on

• has a dominant normal allele that has been inactiviated

• passes the disorder to offspring on the Y chromosome only

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which statement is true of a sex-linked recessive gene?

• In an XY male, this recessive gene is always expressed

• in an XY male, on copy is always inactivated

• In an XX female, only one copy is needed for expression

• in an XX female, it is always passed to offspring

In the case of codominant alleles, a plant that is homozygous for red flowers that is crossed with a plant that is homozygous for white flowers will produce flowers that are

• red and white spotted

• completely white

• pink and red

• dark pink all over

Tags

NGSS.HS-LS3-1

Suppose the distance between two genes on a linkage map is 7 units. The cross-over frequency between the two genes is

• 0.7%

• 7%

• 70%

• 700%