Spring Final Exam Review 2022

In a normal karyotype, there are --------- chromosomes.

• 22

• 23

• 45

• 46

The last pair of chromosomes is called the _____ chromosomes.

• sex

• autosomal

• directional

• mutational

The first 22 pairs of chromosomes are called the _____ .

• sex chromosomes

• autosomes

• mutated chromosomes

• gametes

A carrier has this genotype..

• homozygous

• purebred

• heterozygous

• 2 dominant alleles

In a pedigree, this represents an

• unaffected male

• unaffected female

• affected male

• affected female

A picture of chromosomes is called a

• karyotype

• pedigree

• punnett square

• family tree

What can predict the future, trace a disease an determine if an allele is dominant or recessive?

• A karyotype

• A picture of the chromosomes

• A pedigree

• A dichotomous key

What would the genotype be of a colorblind male?

• X^NY

• X^NYⁿ

• XⁿY

• XⁿYⁿ

Colorblindness is more common in males than in females because......

• fathers pass the allele for colorblindness to their sons only

• the allele for colorblindness is located on the Y chromosome

• the allele for colorblindness is recessive and located on the X chromosome

• males who are colorblind have two copies of the allele for colorblindness

What is the gender of the individual whose karyotype is seen in the image?

• Male
• Female