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Genetics vocab quiz

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

what are genetics ???

a)

“specific region of DNA that codes for a particular protein .”

b)

“collection of all of an organism’s physical characteristics.”

c)

“cross, or mating, between organisms involving two pairs of contrasting traits.”

d)

“image of all the chromosomes in a cell.”

2.

“ A specific region of DNA that codes for a particular protein is a ....

a)

trait

b)

allele

c)

dihybrid

d)

gene

3.

a trait is a .....

a)

“image of all the chromosomes in a cell.”

b)

heterozygous phenotype that is a blend of the two homozygous phenotypes .”

c)

“characteristic that is inherited.”

d)

“cross, or mating, between organisms involving two pairs of contrasting traits.”

4.

“any of the alternative forms of a gene that occurs at a specific place on a chromosome are

a)

genetics

b)

allele

c)

genotype

d)

dihybrid

5.

what is a dominant trait ??

a)

“allele that is expressed when two different alleles are present in an organism’s genotype.”

b)

“allele that is not expressed unless two copies are present in an organism’s genotype .”

c)

“collection of all of an organism’s physical characteristics.”

d)

“image of all the chromosomes in a cell.”

6.

“allele that is not expressed unless two copies are present in an organism’s genotype

a)

dominant trait

b)

recessive trait

c)

phenotype

d)

monohybrid

7.

what is a genotype ???

a)

“collection of all of an organism’s physical characteristics.”

b)

“characteristic of having two of the same alleles that appear at the same locus of sister chromatids”

c)

“heterozygous phenotype that is a blend of the two homozygous phenotypes .”

d)

“collection of all of an organism’s genetic information that codes for traits.”

8.

what is a phenotype ???

a)

“cross, or mating between organisms that involves only one pair of contrasting traits .”

b)

“collection of all of an organism’s physical characteristics.”

c)

“heterozygous genotype that equally expresses the traits from both alleles.”

d)

“allele that is not expressed unless two copies are present in an organism’s genotype .”

9.

“heterozygous genotype that equally expresses the traits from both alleles.”

a)

test cross

b)

codominance

c)

karyotype

d)

homozygus

10.

what is incomplete dominance???

a)

“characteristic of having two of the same alleles that appear at the same locus of sister chromatids”

b)

“cross, or mating, between organisms involving two pairs of contrasting traits.”

c)

“heterozygous phenotype that is a blend of the two homozygous phenotypes .”

d)

“collection of all of an organism’s physical characteristics.”

11.

what is a test cross ???

a)

“cross, or mating, between organisms involving two pairs of contrasting traits.”

b)

“cross, or mating between organisms that involves only one pair of contrasting traits .”

c)

“cross between an organism with an unknown genotype and an organism with a recessive phenotype .”

d)

“heterozygous genotype that equally expresses the traits from both alleles.”

12.

“The cross, or mating between organisms that involves only one pair of contrasting traits is a ....

a)

karyotype

b)

nondisjunction

c)

heterozygous

d)

monohybrid

13.

what is a dihybrid ???

a)

“image of all the chromosomes in a cell.”

b)

“cross, or mating, between organisms involving two pairs of contrasting traits.”

c)

“heterozygous genotype that equally expresses the traits from both alleles.”

d)

“collection of all of an organism’s physical characteristics.”

14.

“image of all the chromosomes in a cell.”

a)

karyotype

b)

phenotype

c)

genotype

d)

sex linked traits

15.

what is homozygous ???

a)

“image of all the chromosomes in a cell.”

b)

“characteristic of having two of the same alleles that appear at the same locus of sister chromatids”

c)

“allele that is not expressed unless two copies are present in an organism’s genotype .”

d)

“collection of all of an organism’s physical characteristics.”

16.

what is heterozygous ???

a)

“characteristic that is inherited.”

b)

“allele that is not expressed unless two copies are present in an organism’s genotype .”

c)

“characteristic of having two different alleles that appear at the same locus of sister chromatids.”

d)

“any of the alternative forms of a gene that occurs at a specific place on a chromosome.”

17.

what are sex linked traits ???

a)

“image of all the chromosomes in a cell.”

b)

“collection of all of an organism’s physical characteristics.”

c)

gene that is located on a sex chromosome

d)

heterozygous phenotype that is a blend of the two homozygous phenotypes .”

18.

“the failure of homologous chromosomes or sister chromatids to separate properly during cell division.”

a)

nondisjunction

b)

genetics

c)

dominance

d)

monohybrid

19.

what is an autosomal dominant trait ???

a)

“heterozygous phenotype that is a blend of the two homozygous phenotypes .”

b)

“cross, or mating, between organisms involving two pairs of contrasting traits.”

c)

a pattern of inheritance characteristic of some genetic diseases

d)

“gene that is located on a sex chromosome .”

20.

greater influence by one of a pair of genes (alleles) that affect the same inherited character.

a)

dominance

b)

genetics

c)

homozygous

d)

recessive