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Introduction to Heredity

Explore the basics of heredity, DNA, genes, and how traits are passed from parents to offspring.

Grade 8 Science BiologyIntroduction to Heredity
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Multiple ChoiceFill in the BlanksTrue / FalseCustomShort AnswerWord Bank

Standards

MS-LS3-1MS-LS3-2

Topics

hereditygeneticsDNAgenestraitsbiologysciencegrade 8
8 sections · Free to use · Printable
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Introduction to Heredity

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Date:

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Read each question carefully and answer to the best of your ability. Good luck!

1. What is the process by which traits are passed from parents to their offspring?

a

Photosynthesis

b

Heredity

c

Respiration

d

Digestion

2. Which of the following carries the genetic information in the cell?

a

Protein

b

Lipid

c

DNA

d

Carbohydrate

1. The basic unit of heredity is a  .

2. Different forms of a gene are called  .

3. The observable characteristics of an organism are called its  .

1. All living organisms contain DNA.

T

True

F

False

2. Genes are located on chromosomes.

T

True

F

False

3. The image below shows a model of DNA. Describe the key features of its structure.

DNA Double Helix

1. Explain the difference between a genotype and a phenotype.

2. How many chromosomes do humans typically have in each body cell?

Use the words below to complete the sentences.

Allele
Homozygous
Heterozygous
Dominant

1. A different form of a gene is called an  .

2. An organism with two identical alleles for a trait is  .

3. A trait that always shows up when the allele is present is called  .