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Worksheets

Genetics Basics

Total questions: 20

Worksheet time: 13mins

Name
Class
Date
1.

Which of the following are PHENOTYPES?

a)

red hair

b)

Gg

c)

Seven Toes

d)

SS

e)

cc

2.

Which of the following are GENOTYPES?

a)

crooked pinky finger

b)

Dd

c)

QQ

d)

Orange teeth

e)

ff

3.

Which of the following represent recessive alleles?

a)

R

b)

r

c)

T

d)

H

e)

y

4.

The allele (version of a trait) for pink hair is dominant. Which of the following would result in a person with pink hair?

a)

Pp

b)

PP

c)

pp

5.

Monsters with red skin have the dominant trait. Which of the following could be the genotype of this monster?

a)

rr

b)

red skin

c)

Rr

d)

RR

6.

Tall (T) is dominant over dwarf (t) in a species of plant. A tall plant has an unknown genotype. Which plant should it be crossed with to ascertain this?

a)

TT

b)

Tt

c)

tt

7.
Which of these is not a trait controlled by genetics?
a)
blue eyes
b)
freckles
c)
bleached blond hair
d)
dimples
8.

A genetically determined characteristic.

a)

trait

b)

genotype

c)

phenotype

d)

gene

9.

What's the probability an offspring will have the dominant Brown Eyes in this Punnett Square

a)

1/4

b)

2/4

c)

3/4

d)

/4

10.

When something that is passed from parent to offspring

a)

inherited

b)

offspring

c)

learned behaviors

d)

species

11.

Use this chart of puppy characteristics to answer this question. Which puppies would you most expect to have parents with brown fur?

a)

Sam & Kira

b)

Mongo & Kira

c)

Chewy & Yosi

d)

Sam & Chewy

12.

How does a breeder of Cocker Spaniels make sure every puppy they raise, looks like a Cocker Spaniel?

a)

They cross a female Cocker Spaniel with a Golden Retriever.

b)

They dock their tails and ears as soon as they are born.

c)

They train the puppies to act lie Cocker Spaniels.

d)

They make sure the mother and father are both Cocker Spaniels.

13.
Which 23rd chromosome combination would result in a person being FEMALE?
a)
XY
b)
XX
c)
YY
d)
XZ 
14.

Where are chromosomes found in the cell?

a)

Mitochondria

b)

Ribosome

c)

Nucleus

d)

Cytoplasm

15.

Which of the following are examples of inherited characteristics?

a)

Eye Colour

b)

Accent

c)

Height

d)

Talent

16.

Chromosomes are found in the nucleus and are made up of ____________ and protein.

a)

Molecules

b)

DNA

c)

Genetics

d)

Chromosomes

17.
The drawing shows the structure of what molecule?
a)
A DNA molecule
b)
A lipid molecule
c)
A carbohydrate molecule
d)
A protein molecule
18.

Which is Purebred?

a)
b)
19.
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
20.

Look at the diagram shown.


Which of these gives the correct ratio for the offspring predicted by the diagram?

a)

2 BB : 1 Bb

b)

1 BB : 1 BB

c)

1 BB : 1 Bb

d)

1 BB : 2 Bb