NEW
Font size
S
M
L
XL
WorksheetsReeder Genetics
Total questions: 41
Worksheet time: 2hrs 56mins
Name
Class
Date
1.
Heredity is the passing of traits from _____________________ to _____________________
a)
predators to prey
b)
water to rain
c)
parents to offspring
d)
fungi to protists
2.
Why did Mendel choose to study pea plants in order to learn how traits are passed from parent to offspring?
a)
Pea plants grow quickly
b)
Pea plants are ultraviolet
c)
Pea plants are rare and expensive
d)
Pea plants are take years to grow
3.
A ________________________ is used to predict the possible genotype from certain parents
a)
Mendel Grid
b)
Genetic Tic Tac Toe
c)
Punnett Square
d)
Pedigree Plot
4.
______________________ is the mathematical chance that something will happen
a)
division
b)
selective breeding
c)
ratio
d)
probability
5.
_____________________ are cells that join to make offspring
a)
speed cells
b)
sex cells
c)
pea cells
d)
pedigree cells
6.
When humans breed purebred dogs to look a certain way and have traits that they like, this is an example of ___________________________
a)
Probably Breeding
b)
Sectional Breeding
c)
Selective Breeding
d)
Suspended Breeding
7.
This is a part of the chromosome that carries information and controls a trait
a)
trait
b)
gene
c)
chromosome
d)
offspring
8.
What is the type of gene whose effect can be hidden?
a)
dominant gene
b)
inherited trait
c)
recessive gene
d)
acquired trait
9.
What type of gene can hide the effects of a recessive gene?
a)
inherited trait
b)
learned trait
c)
dominant gene
d)
recessive gene
10.
Having 2 different alleles for a trait (also known as a hybrid)
a)
Heterozygous
b)
Homozygous
11.
Having two of the same alleles (also known as purebred)
a)
Homozygous
b)
Heterozygous
12.
Phenotype is the organisms physical appearance while genotype in the organisms genetic make up
a)
true
b)
False
13.
How many total chromosomes are in a human?
a)
23
b)
46
c)
13
d)
100000
14.
Two heterozygous (Tt)tall pea plants are crossed. Which describes their offspring?
Create a punnett square.
Create a punnett square.
a)
50% tall and 50% short
b)
75%tall and 25% short
c)
100%short
15.
Which of the following cell types is formed by meiosis?
a)
muscle cells
b)
skin cells
c)
sperm cells
d)
blood cells
16.
Which statement correctly describes meiosis?
a)
cells divide only once
b)
meiosis does not occur in reproductive cells
c)
the cells produced at the end of meiosis are genetically identical to the parent cell
d)
The cells produced at the end of meiosis contain half the number of chromosomes as the parent cell
17.
Which of the following represents chromosome # during fertilization?
a)
n+n=2n
b)
n=n
c)
2n=n+n
d)
2n=2n
18.
Mendel hypothesized that reproductive cells have only one factor for each inherited trait. This hypothesis is supported by the observation that
a)
haploid cells are produced by mitosis
b)
diploid cells are produced by mitosis
c)
haploid cells are produced by meiosis
d)
diploid cells are produced by meiosis
19.
What is one advantage of sexual reproduction?
a)
offspring are identical to parents
b)
offspring are resistant to viruses
c)
offspring are born live, rather thna from eggs
d)
offspring inherit a wider variety of genetic information
20.
A male shark has 40 chromosomes in each of its sex cells. How many would be present in its body cells?
a)
20
b)
40
c)
80
d)
160
21.
The cells produced via meiosis are called:
a)
gametes
b)
somatic cells
c)
body cells
d)
skin cells
22.
The haploid number of chromosomes for humans is
a)
46
b)
43
c)
23
d)
26
23.
How many daughter cells result from meiosis?
a)
2
b)
4
c)
6
d)
8
24.
Which of the following best describes meiosis?
a)
cell division that occurs only in the reproductive structures of an organism
b)
process prior to the first stage of the cell division
c)
occurs in all cells of the body system
d)
cell division that occurs in the repair process of damaged skin cells
25.
Which genotype is heterozygous?
a)
HH
b)
Hh
c)
hh
26.
Which genotype is homozygous dominant?
a)
HH
b)
Hh
c)
hh
27.
Which genotype is homozygous recessive?
a)
HH
b)
Hh
c)
hh
28.
If having hairy feet is a dominant trait what are the possible genotypes of a hairy foot person?
a)
HH or hh
b)
Hh or hh
c)
HH or Hh
29.
What do half colored symbols represent?
a)
The individual is a carrier.
b)
The individual expresses the trait.
c)
The individual has both recessive alleles.
d)
The individual has both dominant alleles.
30.
a)
Not affected Female
b)
Not affected Male
c)
Affected Male
d)
Affected Female
31.
What does a horizontal line between a square and a circle mean?
a)
They are siblings
b)
They are cousins
c)
They are married ("together")
d)
They are the children
32.
What does a vertical line coming down from a square and circle that are connected by horizontal line indicate?
a)
They are cousins
b)
The children
c)
Aunts and Uncles
33.
Who is considered the father of genetics?
a)
George Sarris
b)
Nelson Mandela
c)
Gregor Mendel
34.
Black hair is dominant to blonde hair which is recessive.
What is the phenotype for the following genotype?
bb
What is the phenotype for the following genotype?
bb
a)
Blonde hair
b)
black hair
c)
brown hair
35.
In a pedigree, what does a circle represent?
a)
Male
b)
Female
c)
Offspring
36.
In a pedigree, what does a square represent?
a)
Male
b)
Female
c)
Offspring
37.
Two heterozygous (Tt)tall pea plants are crossed. Which describes their offspring?
a)
50% tall and 50% short
b)
75%tall and 25% short
c)
100%short
38.
FF crossed with ff, what is the probability of the DOMINANT PHENOTYPE appearing in the offspring generation?
a)
0%
b)
25%
c)
50%
d)
100%
39.
T - tall and t = short
In the punnett square below, what belongs in the missing square
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
40.
How many UNAFFECTED females are in this pedigree?
a)
1
b)
2
c)
3
d)
4
41.
Given that this is a recessive pedigree...
What is the genotype of individual II-3?
What is the genotype of individual II-3?
a)
aa
b)
Aa
c)
AA
Reset
