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Heredity

Total questions: 22

Worksheet time: 1hrs 13mins

Name
Class
Date
1.

The study of heredity is

a)

Geology

b)

Genetics

c)

Physics

d)

Chemistry

2.
Heredity is the passing of traits from _____________________ to _____________________
a)
predators to prey
b)
water to rain
c)
parents to offspring
d)
fungi to protists
3.
If a child has red hair, they inherited a certain _______________ from their parents.
a)
ratio
b)
trait
c)
probability
d)
sex chromosome
4.
Characteristics that are passed from parents to their offspring are called 
a)
behaviors
b)
learned traits
c)
inherited traits
d)
functions
5.
What is NOT an example of an inherited TRAIT?
a)
eye color
b)
tongue rolling
c)
height
d)
speaking a language
6.

Different versions of a gene.

a)

heredity

b)

gene

c)

allele

d)

genotype

e)

phenotype

7.

The combination of alleles that you inherited from your parents. This is what you genes look like, the letters. ex. HhGg

a)

heredity

b)

gene

c)

allele

d)

genotype

e)

phenotype

8.

The observable traits. This is what you physically look like, or what gene is expressed. ex. Round Yellow

a)

heredity

b)

gene

c)

allele

d)

genotype

e)

phenotype

9.

An organism with two dominant or two recessive alleles. Or same.

a)

heterozygous

b)

homozygous

10.

An organism with one dominant and one recessive allele. Or different.

a)

heterozygous

b)

homozygous

11.
How many alleles (letters) do each person carry for a trait?
a)
1
b)
2
c)
3
d)
4
12.
How many alleles (letters) does a child get from each parent for each trait?
a)
1
b)
2
c)
3
d)
4
13.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
14.
Aa is
a)
homozygous
b)
heterozygous
15.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
16.
Which of the following is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
17.
What gender has an X and a Y chromosome?
a)
male
b)
female
c)
transgender 
d)
all of the above
18.
Autosomes are
a)
chromosomes found in autotrophs, only
b)
chromosomes that automatically correct all errors in the DNA
c)
chromosomes that determine traits other than sex
d)
chromosomes that determine the sex of the individual
19.

How many chromosomes does a human body cell have, total?

a)

48

b)

46

c)

23

d)

47

20.

The 23rd pair of chromosomes that do determine the sex of an individual are called ___________.

a)

sex chromosomes

b)

autosomes

c)

homologous

d)

genes

21.

The 2 female sex chromosomes are ___.

a)

XY

b)

XX

22.

A photo of the chromosomes in a dividing cell that are arranged by size is called a _________.

a)

mutation

b)

gene

c)

picture

d)

karyotype

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