Free Printable Genetics

Worksheets

Genetics

Total questions: 23

Worksheet time: 25mins

Name

Class

Date

What is the study of genes and inheritance known as?

Genetics

Chemistry

Physics

Astronomy

An organism's observable physical features are also called what?

Genotype

Phenotype

Check any/all phenotypes described below

Tall

Green eyes

Spotted fur

An organism's genetic code is also called what?

Genotype

Phenotype

You inherit a recessive allele from your mother and a dominant allele from your father. Which allele will be expressed?

The recessive allele

The dominant allele

Attached earlobes are a recessive trait. If you receive a DOMINANT allele from each of your parents, what kind of earlobes will you have?

Attached earlobes

Detached (free) earlobes

A cleft chin is a dominant trait. If you receive a RECESSIVE allele from each of your parents, what type of chin will you have?

Cleft chin

Smooth chin

What does heterozygous mean?

An organism that has the same genes for a trait (TT or tt)

An organism that has different genes for a trait (Tt)

When neither gene is fully dominant; offspring is a mixture of both

the different forms of a trait (hair color--> brown, blonde, red

If a heterozygous tall pea plant is crossed with a short pea plant, what are the possible genotypes of the future offspring?

100% Tt

50% Tt, 50% tt

75%Tt, 25%tt

25%TT, 50%Tt, 25%tt

10.

What does a filled in square represent?

Not affected Female

Not affected Male

Affected Male

Affected Female

11.

How many generations are shown in this pedigree?

12.

This pedigree represents the inheritance of hemophilia in this family. How many of the females have the hemophilia trait?

13.

In this pedigree, which gender can be carriers of colorblindness and not have it?

Just males

Just females

Both genders

14.

Give the genotype for person II-1, for this autosomal trait.

we cannot be 100% sure of the genotype

15.

If a trait SKIPS a generation, it is an indication that the trait is....

dominant

recessive

incompletely dominant

co-dominant

16.

Objective #13

This is a pedigree that follows blue eyes which is a recessive trait. What is the genotype of the father (square) in generation 1?

17.

What are the parts of a nucleotide?

phosphate, sugar, base

A, T, G, C

Nucleic Acids

two base pairs connected

18.

Which of the following is correctly matches: ATT GTA CGA

TAA CAT GCT

ATT GTA CGA

TAA GTA TCG

GCC ACG TAC

19.

What do genes do?

make proteins

store energy

create covalent bonds

create hydrogen bonds

20.

DNA is shaped in a:

double helix

tightly packed swirl

twisted ladder

nucleotide

21.

Which process and type of resulting cells are represented?

mitosis, gametes

mitosis, body cells

meiosis, gametes

meiosis, body cells

22.

Females have ____ and males have _____ chromosomes.

XX, XY

XY, XX

XX, XX

XY, XY

23.

What is this?

Trisomy 13

Monosomy 21

47, XXY

Trisomy 21

100 %

Genetics

Total questions: 23

Worksheet time: 25mins

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