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Class 10 Biology - Heredity

Total questions: 40

Worksheet time: 48mins

Name
Class
Date
1.
What is NOT an inherited trait of humans?
a)
Favorite type of music
b)
Freckles
c)
Hair color
d)
Height
2.
Which of these is an acquired trait?
a)
Having blue eyes
b)
Pierced ears
c)
The ability for a baby to cry
d)
Freckles
3.
What is a trait that is passed from parents to offspring before the offspring is born?
a)
Learned behavior
b)
Acquired trait
c)
Inherited trait
d)
Offspring
4.
What is genetics?
a)
The study of DNA nucleotides
b)
The study of heredity
c)
The study of a cell dividing into 2
d)
The study of eye color
5.
After Mendel died scientists began to recognize the importance of his ideas. They called him a name. What was that name?
a)
Father of genes
b)
Father of heredity
c)
Father of genetics
d)
Father of traits
6.

Chromosomes are found in the ____________ of the cell

a)

Chloroplast

b)

Nucleus

c)

Cytoplasm

d)

Mitochondria

7.
What is a gene?
a)
An entire chromosome that  codes for a trait
b)
a piece of clothing
c)
a piece of a DNA on chromosome that codes for a trait
d)
Chemical messengers in your brain that code for a trait
8.

Segments of DNA are called _______________________

a)

Genes

b)

Nuclei

c)

genotypes

d)

Chromosomes

9.
What is a recessive allele?
a)
A trait that is always shown (capital letter)
b)
A trait that can be hidden (lower case letter)
c)
Alleles that are the same
d)
Alleles that are different
10.

The physical traits of an organism

a)

Teletype

b)

Genotype

c)

Mesotype

d)

Phenotype

11.
The genes of an organism
a)
Mesotype
b)
Phenotype
c)
Teletype
d)
Genotype
12.
What is a dominant allele?
a)
A trait that is always shown (capital letter)
b)
A trait that can be hidden (lower case letter)
c)
Alleles that are the same
d)
Alleles that are different
13.

This means Same Gene

a)

Dominant

b)

Recessive

c)

Heterozygous

d)

Homozygous

14.
A unit of genetic material that determines a trait
a)
Carrier
b)
DNA
c)
chromosome
d)
Gene
15.
Genes always appear in pairs. Your parents donate ________ allele for every trait.
a)
1
b)
2
c)
23
d)
46
16.

This means Different Gene

a)

Dominant

b)

Recessive

c)

Homozygous

d)

Heterozygous

17.
What is Bb?
a)
Homozygous
b)
Heterozygous
c)
Recessive
d)
Alleles
18.

What are the two genotypes that show the DOMINANT Phenotype

a)

GG, gg

b)

GG, Gg

c)

Gg, gg

d)

G, g

19.

What is the only Genotype that shows the RECESSIVE Phenotype?

a)

GG

b)

Gg

c)

gg

d)

g

20.
Which of the following pairs is homozygous dominant?
a)
Hh
b)
pp
c)
HH
d)
aa
21.
How many are tall?
a)
0
b)
1
c)
2
d)
4
22.

The scientific study of heredity.

a)

Genetics

b)

Heredity

c)

Probability

d)

Pedigree

23.

The different forms of a gene.

a)

Genes

b)

Allele

c)

Phenotype

d)

Pedigree

24.

A trait that is always hidden when the dominant allele is present.

a)

Phenotype

b)

Recessive allele

c)

Genotype

d)

Heredity

25.

Physical appearance or physical trait.

a)

Phenotype

b)

Genotype

c)

Allele

d)

Trait

26.

An organism's genetic makeup or allele.

a)

Homozygous

b)

Phenotype

c)

Genotype

d)

Heterozygous

27.
How many alleles (letters) does a child get from each parent for each trait?
a)
1
b)
2
c)
3
d)
4
28.
How many alleles (letters) do each person carry for a trait?
a)
1
b)
2
c)
3
d)
4
29.
B = brown eyes
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.
a)
they have same phenotype and genotype
b)
they have different genotypes and phenotypes
c)
they have same phenotype but different genotypes
d)
they have same genotype but different phenotypes
30.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
31.
Which of the following is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
32.
What gender has an X and a Y chromosome?
a)
male
b)
female
c)
transgender 
d)
all of the above
33.
The different forms of a gene
a)
heredity
b)
genetics
c)
gene
d)
alleles
34.
Characteristics can also be called
a)
heredity
b)
traits
c)
gene 
d)
alleles
35.
The factors that control a trait
a)
genetics
b)
trait
c)
gene
d)
alleles
36.
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
37.
A new organism begins to form when egg and sperm join in a process called
a)
fertilization
b)
phenotype
c)
homozygous
d)
heterozygous
38.

The brown eye trait is dominant over blue eyes. Which of the following genotypes best represents the phenotype for blue eyes?

a)

BB

b)

Bb

c)

bb

d)

bB

39.

Each organism has 2 alleles for a particular trait. Where do these two alleles come from?

a)

One from each parent

b)

Both from one parent

c)

Alleles do not come from parents

d)

The kidney

40.

What is the genotype for #15?

a)

rr

b)

Rr

c)

RR

d)

rR