Power Study:Probability and Genetics Quiz

For Mrs. Schworer

TermsMatch the terms that goes together

DefinitionsPhenotype - the set of observable characteristics of an

individual resulting from the interaction of its genotype with the environment. (trait)

Genotype - he genetic constitution of an individual organism. (Allele)

Homozygous - having the two genes that are the same. (Purebred)

Heterozygous – having two genes that are different. (Hybrid)

Heterozygous or Homozygous

Classify each of the following gene pairs as heterozygous or homozygous

RR _________ ff __________

Tt __________ Ll __________

Homozygous

Heterozygous

Homozygous

Heterozygous

TRAIT DOMINANT GENE RECESSIVE GENE

Hair Color Brown - B Blonde - b

Widows Peak With Widows Peak - W Without Widows Peak - w

Dimples With Dimples - D Without Dimples - d

Purebred brown hair color - _______

Hybrid with widows peak:______

Heterozygous with dimples: ______

Homozygous blonde hair color: ______

BB

Ww

Dd

bb

Round eyes (R) are dominant to Oval eyes (r) in Mrs. Schworer’s family. Give the PHENOTYPE for

each of the genotypes below.

RR - ______________

Rr - _______________

rr - _______________

Round eyes

Round eyes

Oval eyes

Long nose – LShort nose - l

Donald Duck is heterozygous for a long nose. He recently married Daffy Duck with homozygous for a stubby nose.

Donald Duck (heterozygous for long nose) = __________

Daffy Duck (homozygous for stubby nose) = __________

COMPLETE THE PUNNETT SQUARE

Ll

ll

L l

l

l

Ll

Ll ll

ll

Percentage for long nose? ______% Percentage for stubby nose________%

50 50

What is Codominant?Codominance is ……

A. Codominance is when a heterozygous organism will express or show both dominant alleles for a trait. B. Codominance is when nothing is dominant.

C. Codominance is when a homozygous organism will express or show both dominant alleles for a trait.

Codominance In horses theres is a codominance; (B) is the symbol for black,

(W) is they symbol for white, and (BW) is the symbol for black and white.

Cross a homozygous black male horse with a homozygous white female horse.

Genotypes of offspring:

______________________

Phenotypes of offspring:

______________________BW Black and White

W

W

B B

BW BW

BW BW

Multiple Alleles If Ryan has the blood type O and is married with Deanna who

has the blood type A, she would be homozygous for this blood type, what blood types could their children have? Remember to use I , I , and I for the alleles.

A B

i i

IA

IA

IA i IA i

IA iIA i

The children would have blood type(s): ________________A

Incomplete DominanceBob the gardener is growing roses that come in

the colors red (RR), white(WW), and pink (RW).

What would happen if Bob crossed a pink flower with a red flower?

R W

R

R

RR

RR

RW

RW

How many plants would be red? ___________%

How many plants would be white? _________%

How many plants would be pink? __________%

50

0

50

Continue to look over your worksheets!

Keep practicing past work and reviewing your terms!

BEST OF LUCK! Take your time on the quiz and I know you will all do great