Free Printable Chapter 17.1

Worksheets

Chapter 17.1

Total questions: 15

Worksheet time: 9mins

Name

Class

Date

How is eveloution defined in genetic terms ?

Evolution is the sudden appearance of new species

Evolution is the process of devolution in genetic terms

Evolution is the result of individual choice in genetic terms

Evolution in genetic terms refers to the change in heritable characteristics of biological populations over generations.

What determines the number of phenotypes for a given trait ?

Environmental factors

Number of genes for each trait

Genetic mutation

Dominant allele

Define Gene Pool .

The gene pool is the complete set of unique alleles in a population at a certain point in time.

The gene pool is a term used to describe the DNA of an individual organism.

The gene pool refers to the process of mixing genes from different species.

The gene pool is a physical location where genes are stored.

Define Allele frequency.

Frequency of an individual's name in a population

Rate of mutation in a gene

the number of times an allele appears in a gene pool.

Number of chromosomes in a cell

What is a single-gene trait?

A single-gene trait is a characteristic determined by multiple genes.

A single-gene trait is a trait influenced by environmental factors only.

A single-gene trait is a characteristic that is determined by the instructions carried on one gene.

A single-gene trait is a trait that skips generations.

What is an example of a polygenic trait?

Eye color

Blood type

Freckles

Human height

The physical expression of a trait is called the ...

genotype

phenotype

Genotype: TT

homozygous dominant

homozygous recessive

heterozygous dominant

Genotype: Aa

homozygous dominant

homozygous recessive

heterozygous dominant

10.

Cross 2 heterozygous tall pea plants. Tall (T) is dominant to short (t). What fraction of the offspring do you predict will be tall?

1/4

2/4

3/4

4/4

11.

Which of the following is a PHENOTYPE for flower color in pea plants?

Purple

12.

The different forms or versions of a gene are called ...

alleles

gametes

13.

Which of the following best describes what the image represents? (a)

Choose from the below words

Genetic Drift

Migration

Mutation

Natural Selection

14.

All the possible gene combinations in a population.

allele

gene pool

genome

mitosis

15.

The allele frequencies of the mouse population in the picture are changing over time. Which is true?

The population is evolving.

The population is not evolving.

The population will go extinct.

The population's genetic variation is increasing.

Reset

Chapter 17.1

Total questions: 15

Worksheet time: 9mins

Similar Resources on Wayground