Science Intersession PDOL

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Which statement describes why genetic variation is beneficial to populations of organisms?

• individuals look different from one another
• only one parent is needed to produce offspring
• populations of the organism increase more rapidly
• species can better survive environmental changes

Sexual reproduction requires ______ parent(s) and asexual reproduction requires ______ parent(s).

• one, one
• two, two
• two, one
• one, two

If two organisms reproduce sexually, then their offspring will exhibit a genetic makeup that is -

• identical to only one parent
• the recessive traits of each parent
• a unique combination of traits
• identical to all of its siblings

In sexual reproduction, how much DNA is given by each parent?

• 10%
• 30%
• 50%
• 100%

Flowering plants can reproduce both sexually and asexually.

• True
• False

The passage of genetic instructions from one generation to the next generation is called ________________.

• DNA
• heredity
• chromosomes
• nucleus

Inherited traits include things like your hair color and _________________.

• your height
• clothes your wear
• your age
• your job

How many pairs of chromosomes exist in each of your cells?

• 10
• 12
• 23
• 40

Certain species of whiptail lizards have only female individuals and no males. These lizards reproduce asexually. What is one disadvantage of asexual reproduction for these lizards?

• A new population can be established by a single individual in a relatively short period of time.
• All members of a population are genetically very similar and less able to survive environmental changes.
• They are smaller than lizards that reproduce sexually.
• They are more likely to develop a variety of tail lengths.