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Life Science: Cells and Genetics

Total questions: 43

Worksheet time: 2hrs 12mins

Name
Class
Date
1.
The passing of traits from parent to offspring 
a)
Heredity 
b)
Genetics 
c)
Hybrid 
d)
Probability 
2.
Who was the father of genetics 
a)
Sagan 
b)
Issac Newton 
c)
Gregor Mendel 
d)
C.jenkins 
3.
 which is heterozygous ?  
a)
Tt
b)
TT
4.
Which is homozygous ?
a)
Zz
b)
SS
5.
the genetic makeup of an organism
a)
heterozygous
b)
punnet square
c)
genotype
6.
A homozygous dominant dog with brown fur is crossed with a heterozygous dog with brown fur. What are the percentages of the possible genotypes?
a)
100% BB
b)
75% BB and 25%Bb
c)
50 % BB and 50% Bb
d)
50% Bb and 50% bb
7.
Genotype refers to the ...
a)
physical expression of the genes
b)
the possible combination of alleles in a gene
c)
whether an allele is dominant or recessive
d)
how an organism will appear
8.
Squidward has light blue skin, and his genotype for this trait is Bb. Would Squidward be considered a purebred or hybrid for light blue skin?
a)
Purebred
b)
Hybrid
9.
An offspring will receive how many alleles from each parent to determine a specific trait?
a)
one
b)
two
c)
three
d)
five
10.
Which of the following is a phenotype?
a)
BB
b)
Bb
c)
bb
d)
Blue eyes
11.
What is a phenotype
a)
The genetic make up (code)
b)
The physical trait
12.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
13.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
14.
Magda is a tall, 11 year old drummer. She has a scar on her right cheek. She is good at swimming. Which of her traits did Magda most likely inherit?
a)
height
b)
the scar
c)
ability to swim
d)
ability to play drums
15.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
16.
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
17.
An allele whose trait only shows up when no dominant allele is present.
a)
hidden allele
b)
dominant allele
c)
recessive allele
d)
present allele
18.
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
19.
Which of the following genotypes is a purebred?
a)
Bb
b)
Gg
c)
bb
d)
Dd
20.
One form of a gene is called_______________
a)
a DNA
b)
a Phenotype
c)
a trait
d)
an allele
21.
the condensed form of DNA is called________________
a)
an allele
b)
a gene
c)
a chromosome
d)
a phenotype
22.
Where, in the eukaryotic cell, is DNA located?
a)
ribosomes
b)
nucleus
c)
E.R.
d)
cytoplasm
23.
Which of the following will only show if two alleles are present?
a)
a dominant trait
b)
a recessive trait
24.
Which of the following genotypes would be considered heterozygous?
a)
BB
b)
gg
c)
Ff
d)
TT
25.
Which of the following is a phenotype?
a)
Bb
b)
Black fur
26.
What is the percentage of offspring that have green pods?
a)
100%
b)
75%
c)
50%
d)
25%
27.
What percentage of the offspring in the punnett square are shown as a hybrid?
a)
100%
b)
75%
c)
50%
d)
25%
28.
What is the phenotype of the heterozygous parent in the punnett square?
a)
green
b)
yellow
c)
hybrid
d)
purebred
29.
In this punnett square, which is the dominant trait?
The B stands for bud.
a)
purple flower bud
b)
white flower bud
c)
dominant
d)
recessive
30.
the chances of something happening
a)
dominant
b)
genotype
c)
phenotype
d)
probability
31.
A characteristic that an organism can pass on to its offspring through its genes
a)
protein
b)
trait
c)
DNA
d)
gene
32.

a segment of DNA that controls a hereditary traits?

a)

chromosome

b)

gene

c)

milk

d)

meme

33.

Why is DNA important?

a)

it is very small and very complicated

b)

it serves as the blueprint for traits of all living things

34.

What kind of information does DNA carry?

a)

genetic

b)

nuclear

35.

Which of your body cells contain DNA?

a)

Only bone cells

b)

Most all of the cells in your body

36.

Which statement is true?

a)

Your DNA is the same as your siblings.

b)

Your DNA is unique to you.

37.

A dog breeder allows only certain dogs to breed over several generations in order to produce offspring that have certain traits. Which of the following processes is responsible for the desirable traits present in the offspring?

a)

A. Natural selection

b)

B. Selective breeding

c)

C. A mutation

d)

D. Genetic engineering

38.

Which is MOST likely the purpose of selectively breeding work horses on a farm?

a)

A. To breed a horse that produces less offspring than other horses

b)

B. To breed a horse that is stronger than other horses

c)

C. To breed a horse smaller than other horses

d)

D. To breed a horse that is weaker than other horses

39.

Frogs reproduce by sexual reproduction. A frog can lay dozens of eggs at one time. These eggs cells are created through a process known as ____________________.

a)

A. mitosis

b)

B. meiosis

c)

C. respiration

d)

D. Photosynthesis

40.

Staphylococcus is a type of bacteria that lives and reproduces inside other organisms. It can be both beneficial and harmful to its host organism. Staphylococcus bacteria reproduce through a process called binary fission. One cell splits, forming two new cells that are genetically identical to the parents. This process is known as ______________.

a)

A. Sexual reproduction

b)

B. Asexual reproduction

c)

C. fermentation

d)

D. Natural selection

41.

Mammals reproduce using sexual reproduction. It takes two (2) parents to produce an offspring. What can you infer about the number of chromosomes in each reproductive cell?

a)

A. Each cell has half the number of chromosomes as the body’s cells

b)

B. Each cell has the same number of chromosomes as the body’s cells

c)

C. Each cell has more than twice the number of chromosomes as the body’s cells

d)

D. Each cell has exactly twice the number of chromosome as the body’s cells

42.

Many organisms such as sea stars, fungi, and sponges reproduce by producing offspring that are genetically identical to themselves. Only one parent is needed to reproduce in this way. This process is called________.

a)

A. Sexual reproduction

b)

B. Asexual reproduction

c)

C. fermentation

d)

D. Natural selection

43.

A poultry farmer isolates roosters and hens of specific breeds in order to produce offspring that will display desired colors and patterns in their feathers. The monitoring observations and recording of findings. Which of the terms best identifies this process responsible for obtaining the desirable traits in the off spring?

a)

A. Natural selection

b)

B. Selective breeding

c)

C. A mutation

d)

D. Genetic engineering

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