Pedigree, Karyotype, Genetic/chromosomal disorders

Number 1 is

• an affected male

• an affected female

• an unaffected male

• an unaffected female

Number 4 is

• an affected male

• an affected female

• an unaffected male

• an unaffected female

According to this pedigree, the genotypes of 1 and 2 must be

• homozygous dominant

• homozygous recessive

• heterozygous

This is a recessive disorder, so an affected individual will have a _____________ genotype.

• heterozygous

• homozygous dominant

• homozygous recessive

According to this pedigree, the genotypes for number 5 must be

• homozygous dominant

• homozygous recessive

• heterozygous

Out of number 3, 4, and 5 _______ is the oldest _________.

• 3, sister

• 4, brother

• 5, brother

• 3, brother

Hunnington's Disease is caused by a

• sex-linked gene

• dominant gene

• recessive gene

The sex of an offspring in humans is determined by

• the mother

• the father

• genetic mutation

• metamorphosis

Color blindness is a ________ gene, and is carried on the _______ chromosome.

• dominant, 21

• sex-linked, Y

• sex-linked, X

• recessive, Y

In a pedigree a circle represents a

• male

• female

• offspring

• marriage