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Heredity Part 1

Total questions: 49

Worksheet time: 30mins

Name
Class
Date
1.

A(n) (a)   is a variation of a gene.

2.

A skin cell and an bone cell have _______DNA

a)

The Same

b)

Different

3.

In Larkeys, the allele (E) is dominant for red eyes and the allele (e) is recessive for grey eyes. What would be the possible genotype (s) for red eyes?

a)

EE

b)

Ee or ee

c)

EE or Ee

d)

ee

4.

In Larkeys, the allele (E) is dominant for red eyes and the allele (e) is recessive for grey eyes. What would be the possible genotype (s) for grey eyes?

a)

EE

b)

Ee or ee

c)

EE or Ee

d)

ee

5.
What allele combination should go in the missing box?
a)
AA
b)
Aa
c)
aa
d)
none of these
6.

What is ratio of the offspring from the cross shown that will be homozygous recessive for the trait tallness? T = tall t = short

a)

0 in 4

b)

1 in 4

c)

2 in 4

d)

4 in 4

7.
What is the probability of heterozygous offspring?
a)
25%
b)
50%
c)
0%
d)
100%
8.

Having two identical alleles for a particular gene, such as GG or gg

a)

Homozygous

b)

Dominant

c)

Heterozygous

d)

Recessive

9.

having two different alleles for a particular gene, such as Gg

a)

Homozygous

b)

Dominant

c)

Recessive

d)

Heterozygous

10.

Which of the following are sex chromosomes in human beings?

a)

W

b)

X

c)

G

d)

Y

11.

What are the characteristics of human sex chromosomes?

a)

Sex chromosomes are always identical pairs.

b)

Females are determined by a pair of similar chromosomes.

c)

Males are determined by a pair of dissimilar chromosomes.

d)

The Y chromosome is larger than the X chromosome.

12.

This trait always shows up in an organism when the allele is present

a)

dominant allele

b)

codominance

c)

probability

d)

recessive allele

13.

This trait is hidden whenever the dominant allele is present

a)

dominant allele

b)

codominance

c)

recessive allele

d)

Punnett Square

14.

Heredity is

a)

the passing of traits from parents to offspring

b)

the passing of money to parents

c)

genes

d)

alleles affect inheritance

15.

Chromosomes consist of:

a)

pairs of nucleic acids.

b)

long strands of tightly coiled DNA.

c)

a single gene.

d)

autosomes.

16.

Which of the following statements about sex-linked inheritance is correct?

a)

Almost all of the sex-linked traits are carried on the X chromosome and are recessive.

b)

Almost all of the sex-linked traits are carried on the X chromosome and are dominant.

c)

Almost all of the sex-linked traits are carried on the Y chromosome and are recessive.

d)

Almost all of the sex linked traits are carried on the Y chromosome and are dominant.

17.

A complete set of genetic information for one person

a)

Homozygous

b)

Heterozygous

c)

Genome

d)

Chromosomes

18.

Which chromosomes occur in equal pairs in both males and females and do not determine sex?

a)

Gametes

b)

Autosomes

c)

Genes

d)

Chromosomes

19.

How many chromosomes do all human cells contain, except germ cells?

a)

46 pairs

b)

22 pairs

c)

23

d)

46

20.

When two alleles for the same trait are both expressed. (example brown and white spots)

a)

Heterozygous

b)

Homozygous

c)

Codominant

d)

Locus

21.

Product of reproduction, a new organism produced by one or more parents

a)

Phenotype

b)

offspring

c)

Genotype

d)

Allele

22.

In plants, tall (T) is dominant to short (t). Perform the following cross: Tt x Tt. What is the probability of producing a short plant?

a)

0%

b)

25%

c)

50%

d)

75%

23.

G = green, g = yellow

The genotype for a yellow plant is...

a)

GG

b)

Gg

c)

gg

d)

all of the choices result in yellow

24.

Which of the following genotypes is homozygous dominant?

a)

Aa

b)

aa

c)

AA

25.

An offspring gets its DNA from________.

a)

Mom & Dad

(50:50)

b)

Mom & Dad

(60:40)

c)

Mom & Dad

(40:60)

d)

Only Mom

26.

In people, the Dominant allele (W) codes for a Widow's Peak. The recessive allele (w) codes for no Widow's Peak. What combination of alleles could produce a person without a Widow's Peak?

a)

WW

b)

Ww

c)

ww

27.
Snap dragon color is a incomplete dominant trait.  A red flower (RR) is crossed with white flower (rr)? What color are flowers that are Rr?
a)
Red
b)
Red and White
c)
White
d)
Pink
28.
In butterfly bushes, dark purple and pink parents will produce offspring with lavender flowers. This is a result of 
a)
codominance
b)
incomplete dominance
c)
complete dominance
d)
recessive dominance
29.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
30.
The image shows the pattern of inheritance for colorblindness.  From this diagram we can tell that colorblindness is
a)
a codominant trait
b)
a sex-linked trait
c)
carried on the Y chromosome
d)
is associated with a dominant allele
31.
What is the diploid number in human cells?
a)
2
b)
23
c)
46
d)
92
32.
What is the result of meiosis?
a)

2 daughter cells that are haploid and genetically different (unique)

b)

2 daughter cells that are haploid & identical

c)

4 daughter cells that are diploid & genetically different (unique)

d)

4 daughter cells that are haploid & genetically different (unique)

33.

True or False:

For codominance, both alleles are dominant.

a)

True

b)

False

34.
Which two genotypes would have the same blood type?
a)
IAIA and IAi
b)
IBIB and IAIB
c)
IBi and ii
d)
IAIA and IAIB
35.

Genotype: TT

a)

homozygous dominant

b)

homozygous recessive

c)

heterozygous dominant

36.

What is the term given to the offspring of the first cross between the P generation?

a)

F1

​

b)

F2

c)

F0

37.

Where are chromosomes found?

a)

vacuole

b)

cell membrane

c)

nucleus

d)

mitochondria

38.

A chart that shows all the possible combinations of alleles that can result from a genetic cross

a)

dominant allele

b)

codominance

c)

probability

d)

Punnett Square

39.

An organism's genetic makeup, or allele combination. The letters we use to show the allele combination.

a)

phenotype

b)

genotype

40.

X-linked gene can be inherited both by males and females.

a)

True

b)

False

41.

Incomplete dominance is the blending of traits experienced by the alleles that combine for any given characteristics.

a)

True

b)

False

42.

It involves more than two alleles that are possible to code a certain characteristics. It gives a more diverse traits coded by genes. (Ex. IAi or IAIB)

a)

Incomplete dominance

b)

Complete dominance

c)

Co-dominance

d)

Multiple alleles

43.

A personal with type AB blood has which genotype?

a)

type A

b)

AA

c)

IAIA

d)

IAIB

44.

If a person has type A blood, the phenotype is A. What can the genotype(s) be?

a)

IBIB or IBi

b)

IAIA or IAi

c)

IAIB

d)

ii

45.

A person with a Type O Phenotype would have what potential genotypes?

a)

IBIB

b)

IBi

c)

ii

d)

IAIB

46.

A photograph or picture of chromosomes grouped in ordered pairs is a ______________

a)

pedigree

b)

Punnett Square

c)

Venn Diagram

d)

Karyotype

47.

How would you describe the following pair of alleles/genotype?

BB

a)

homozygous dominant

b)

homozygous recessive

c)

heterozygous dominant

48.

How would you describe the following pair of alleles/genotype?

Aa

a)

homozygous dominant

b)

homozygous recessive

c)

heterozygous dominant

49.

How would you describe the following pair of alleles/genotype?

ff

a)

homozygous dominant

b)

homozygous recessive

c)

heterozygous

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