Punnett Squares and Pedigrees

1.

Multiple Choice

30 sec

1 pt

Complex molecule that carries genetic information that defines an organism's traits. It is stored in the nucleus.

DNA

protein

RNA

glucose nucleic acid (GNA)

2.

Multiple Choice

1 min

1 pt

How many alleles (letters) do each person carry for a trait?

1

2

3

4

3.

Multiple Choice

1 min

1 pt

How many alleles (letters) does a child get from each parent for each trait?

1

2

3

4

4.

Multiple Choice

1 min

1 pt

Dominant alleles are represented by a:

Male gene

lowercase letter

recessive trait

capital letter

5.

Multiple Choice

1 min

1 pt

Aa, DD, bB, yy are all examples of

genotypes

phenotypes

6.

Multiple Choice

1 min

1 pt

In a heterozygous genotype, the ___________ allele takes over in the phenotype.

recessive

dominant

lower case letter

both

7.

Multiple Choice

1 min

1 pt

What you see, or the physical appearance.

Genotype

Phenotype

Homozygous

Heterozygous

8.

Multiple Choice

1 min

1 pt

T - tall and t = short
In the punnett square below, what belongs in the missing square

tt

Tt

Bb

TT

9.

Multiple Choice

1 min

1 pt

B = brown eyes
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.

they have same phenotype and genotype

they have different genotypes and phenotypes

they have same phenotype but different genotypes

they have same genotype but different phenotypes

10.

Multiple Choice

1 min

1 pt

AA and Aa always show up as

dominant

recessive

11.

Multiple Choice

1 min

1 pt

aa always shows up as

dominant

recessive

12.

Multiple Choice

1 min

1 pt

Aa is

homozygous

heterozygous

13.

Multiple Choice

1 min

1 pt

Which of the following is a phenotype?

Aa

red hair

heterozygous

DNA

14.

Multiple Choice

1 min

1 pt

What ratio of the offspring from the cross shown will be homozygous recessive for the trait of tallness?

0 in 4

1 in 4

2 in 4

4 in 4

15.

Multiple Choice

1 min

1 pt

Which of the following genotypes is homozygous dominant?

A

Aa

AA

aa

16.

Multiple Choice

1 min

1 pt

Which of the following genotypes is heterozygous?

Bb

BB

bb

B

17.

Multiple Choice

1 min

1 pt

Which of the following is homozygous dominant?

Yy

Y

yy

YY

18.

Multiple Choice

1 min

1 pt

Which of the following is homozygous recessive?

Tt

tt

TT

T

19.

Multiple Choice

1 min

1 pt

In a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the genotype of any red-flowering plant resulting from this species?

rr

R

RR

RR or Rr

20.

Multiple Choice

30 sec

1 pt

Which of the characteristics is a lion least likely to pass on to its offspring?

fur color

length of tail

scars on leg

body size

21.

Multiple Choice

1 min

1 pt

In a pedigree, what shape represents a male?

circle

square

triangle

diamond

22.

Multiple Choice

1 min

1 pt

What type of heredity is shown in the pedigree?
(hint: check your notes - "modes of inheritance")

Sex-Linked Dominant

Sex-Linked Recessive

Autosomal Dominant

Autosomal Recessive

23.

Multiple Choice

30 sec

1 pt

What gender has an X and a Y chromosome?

male

female

transgender

all of the above

24.

Multiple Choice

1 min

1 pt

W=white hair
w= non-white hair
If you cross a horse with WW and a horse with ww what fraction of the offspring would be expected to have white hair?

none

3/4

1/2

all

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