Free Printable Genetics Vocabulary

Worksheets

Genetics Vocabulary

Total questions: 26

Worksheet time: 29mins

Name

Class

Date

Genotype refers to the ...

physical expression of the genes

the possible combination of alleles in a gene

whether an allele is dominant or recessive

how an organism will appear

G = green, g = yellow
The genotype for a yellow plant is...

all of the choices result in yellow

Where, in the eukaryotic cell, is DNA located?

ribosomes

nucleus

E.R.

cytoplasm

Term for an organism that displays two dominant phenotypes at the same time

codominance

incomplete dominance

multiple alleles

linked genes

Sex cells are produced through the process of

mitosis

cytokinesis

binary fission

meiosis

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

Incomplete dominance means that the traits are

expressed equally

dominant

recessive

blended

Which of the following is homozygous dominant?

A complex molecule that carries the genetic information that defines an organism's traits. It is stored in the nucleus.

DNA

protein

RNA

glucose nucleic acid (GNA)

10.

An allele whose trait only shows up when no dominant allele is present.

hidden allele

dominant allele

recessive allele

present allele

11.

The man who studied traits and came up with genetics is

Watson

Crick

Mendel

Darwin

12.

The passing of genetic traits from parent to offspring.

heredity

trait

gene

allele

13.

Two heterozygous (Tt) tall pea plants are crossed. Which describes their offspring?

50% tall and 50% short

75%tall and 25% short

100%short

14.

The genetic code for the gene

phenotype

genotype

homozygous

15.

The letters dd are an example of a _______ trait.

recessive

homozygous recessive

homozygous dominant

dominant

16.

What is one advantage of sexual reproduction?

offspring are identical to parents

offspring are resistant to viruses

offspring are born live, rather thna from eggs

offspring inherit a wider variety of genetic information

17.

Which of the following cell types is formed by meiosis?

muscle cells

skin cells

sex cells

blood cells

18.

If T=Tall & t=short, what is the genotypic ratio?

1:3

3:1

1:2:1

2:2

19.

A dog gives birth to 5 puppies. What percentage of the chromosomes does each puppy share with the mother?

25%

50%

75%

100%

20.

A gene is

a section of DNA

a chemical found in the nucleus of cells

contains instructions for building a protein

all of the above

21.

DNA consists of

DNA

adenine and thymine

A phosphate, sugar and nitrogenous base

genes

22.

The structure of a DNA molecule is known as a __________.

RNA

double helix

watson-crick

double nucleotide

23.

In a double strand of DNA, the nitrogen bases only pair in a certain combination. Which combination is correct?

A-C and T-G

C-T and A-G

A-T and G-C

A-A C-C

24.

During meiosis, one parent cell gives rise to how many daughter cells?

25.

A stand of DNA contains the following bases AGCTATAC

What would be the bases on the complementary strand?

AGCTATAC

TCGATATG

TGCTTATG

CTAGCGCT

26.

Human gametes (sex cells) contain how many chromosomes?

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Genetics Vocabulary

Total questions: 26

Worksheet time: 29mins

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