10. A heterozygous organism has

D. two different alleles for a trait.

A. three different alleles for a trait.

B. two identical alleles for a trait.

C. only one allele for a trait.

12. When the genotype consists of a dominant and a recessive allele, the phenotype will be like ____________ allele(s).

B. a mixture of both dominant and recessive

13. Both of Tim's parents have brown eyes, but Tim has blue eyes. How is this possible?

B. The characteristic (blue eyes) is carried in a recessive gene.

A. This characteristic (blue eyes) must be carried in the dominant gene.

C. Eye color is not a genetic trait.

18. What does a Punnett square show?

D. all the possible outcomes of a genetic cross

A. only the dominant alleles in a genetic cross

B. only the recessive alleles in a genetic cross

C. all of Mendel’s discoveries about genetic crosses

19. Where are the alleles for each parent written when using a Punnett square?

A. across the top and along the left side of the grid

B. in the top two squares of the grid

C. in the bottom two squares of the grid

D. only at the bottom of the grid

25. In a certain breed of cats, having black hair is the result of two dominant alleles for hair color (HH). The heterozygous genotype (Hh) produces a cat that has black and white spots. Having two recessive (hh) genes results in a white-haired cat. The Punnett square below shows the results of a cross between which two cats?

C. a black cat and a spotted cat

A. a spotted cat and a white cat

Genetics Quiz Review

Quiz

•

Science

•

6th - 8th Grade

•

Practice Problem

•

Hard

•

NGSS

HS-LS3-2, MS-LS4-4, HS-LS4-3

+3

Standards-aligned

HEATHER HERBST

Used 1+ times

FREE Resource

25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

1. Which is true of mutations in DNA?

A. All mutations are beneficial to an organism.

B. A mutation might have no effect on an organism.

C. All mutations are harmful to an organism.

D. Mutations have no effect on an organism.

2. Characteristics that are passed from parents to offspring such as eye color are called ___.

A. adaptations

B. mutations

C. acquired traits

D. inherited traits

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

3. Which term refers to physical characteristics that are studied in genetics?

A. traits

B. offspring

C. generations

D. hybrids

4. Segments of DNA that code for traits are called ___.

A. genes

B. chromosomes

C. factors

D. Tally Sheet

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

5. The different forms or variations of a gene are called ____.

A. genes

B. traits

C. alleles

D. factors

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

6. Scientists call an organism that has two different alleles for a trait a ___.

A. purebred

B. hybrid

C. factor

D. trait

7. What does the notation BB mean to geneticists?

A. two dominant alleles

B. two recessive alleles

C. at least one dominant allele

D. one dominant and one recessive allele

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Genetics Quiz Review

25 questions

1. Which is true of mutations in DNA?

2. Characteristics that are passed from parents to offspring such as eye color are called ___.

3. Which term refers to physical characteristics that are studied in genetics?

4. Segments of DNA that code for traits are called ___.

5. The different forms or variations of a gene are called ____.

6. Scientists call an organism that has two different alleles for a trait a ___.

7. What does the notation BB mean to geneticists?

8. An organism that has two identical alleles for a trait is ___.

9. What does the notation Tt mean to geneticists?

10. A heterozygous organism has

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