Biology II

Biology IIChapter 12 Quiz

If you inherited an A allele from your mom and an O allele from your dad, what blood type would you have?

• A

Change in a gene due to damage or incorrect

copying• mutation

X and Y chromosomes are also known as the

____ chromosomes• sex

T or F: chromosome maps depict absolute

distance between genes on a

chromosome• false

A diagram in which several generations

and the occurrence of genetic characteristics

are shown• pedigree

Name 3 ways you can assess the risks of

passing on a genetic order to your children• Analysis of a pedigree• Genetic counseling • Prenatal testing

Name a trait that is controlled by multiple

alleles in humans• Blood type

Name 3 possible effects of a mutation

• Can be helpful• Can be harmful• Can be neutral

Mutation caused by a piece of DNA breaking

away from it chromosome and becoming attached

to a nonhumologous chromosome

• translocation

What happens when a single nucleotide is

deleted?• A frame shift mutation

If you cross a white-eyed female Drosphila and a red-eyed male

Drosphila, what proportion of the female will have white eyes and what part of the males will have

white eyes?• None and all

What determines the sex of the offspring?

• The father

Because the allele for colorblindedness is on

the X chromosome, colorblindedness is

related to…• sex

If both parents carry the recessive allele that causes cystic

fibrosis, what is the chance that their child

will develop the disease?

• One in four

If a heterozygous red eyed female is crossed with a red-eyed male, how much of the male offspring will have red eyes and how many will have

white eyes?• ½ will have red eyes and ½ will have white eyes

What causes a gamete to receive too many or

too few copies of a chromosome?

• nondisjunction

If you have 47 chromosomes, you

have…• Downs Syndrome

Something that is sex-linked occurs most

often in _____• males

If a certain disease occurs equally in males and females and all the

children with the disease had parents with the

disease, then the disease is…

• Autosomal dominant

ABO blood type is NOT a _______ trait.

• polygenic

Short sections of DNA that are associated

with particular genes and are used to help

diagnose genetic disorders

• Genetic markers

If a man and woman have the same

genotype for a trait, but only one of them shows that trait, it shows that the trait

is..• Sex influenced

How much of the time are two genes that are

one map unit apart separated by crossing

over?• 1% of the time

In Klinefelter’s Syndrome, the male

has the genotype XXY. This is an example of

• trisomy