Things like your eye color and height are not traits you can control. In fact, you inherit traits like these from your parents. These traits are passed on because they are controlled by ____________.

Like animals, plants inherit ways of responding to their surroundings. Roots grow down toward water. Stems grow up toward the sun. Leaves grow toward light, and vines may climb up a tree trunk. These traits are passed from parents to offspring by

Jane and her brother Matt look a little bit alike. Jane made a table. She wanted to figure out how she and Matt inherited certain traits. Based on Jane’s table, what can she say about their inherited traits?

If one strand of DNA had this sequence: AGTC, what would the complementary sequence be?

Which base is found in RNA but NOT in DNA?

Do you forget things? Absent-mindedness is an inherited recessive trait. The Punnett square shows the genetic cross for absent-mindedness in the Smith family. If the Smith's have six children, how many could be absent-minded?

Among a species of butterflies, the color blue (B) is a dominant trait. Yellow color (b) is a recessive trait. If a pure blue butterfly (BB) mates with a pure yellow (bb), what will the offspring look like?

Humans use ________ to pass on desired phenotypic traits to the next generation of organisms.

According to the Punnett square: B represents the dominant gene for blue feathers and b represents the recessive gene for red feathers. Two heterozygous birds have one offspring. What percent chance does it have for red feathers?

Some fruit flies are born with curly wings which makes them unable to fly. It has been shown that curly wings are caused by a dominant gene which can be represented by the symbol W, while the recessive normal wing gene is represented by the symbol w. If a parent fly with the genotype WW is crossed with a parent of the genotype Ww, what percentage the offspring will have curly wings?

Free earlobes hang below the point where the earlobe attaches to the head. Attached earlobes do not hang, but are attached to the head. The gene for free earlobes is dominant (F), while the gene for attached earlobes is recessive (f). Both of Ashley’s parents have free earlobes but also carry a recessive gene for attached earlobes. Ashley has attached earlobes, so she must have

In a given hybridization between two flowers, red "R" is dominant, and white "r" is recessive. In a cross between two white-flowered plants, all of the offspring had white flowers. If a plant grower wanted to produce red flowers, what should she or he consider during breeding?

_______________, harmful or helpful, is considered to be the source for new alleles and a main contributor to the diversity of life on Earth.

The selective breeding of wild mustard has _________ _________ and produced at least four other vegetable crops.

Mutations can occur in the chromosomes of all types of cells. Where must mutation occur to be passed on?

According to what you have learned about recessive and dominant traits, which statement best describes the result of a cross between parents with genotypes Rr and Rr?

All of the substances are ____________, which cause inheritable changes in genetic material.

Beneficial, neutral, or harmful: An extra copy of a human chromosome results in a child born with Down's Syndrome.

Beneficial, neutral, or harmful: A mutation that could cause a genetic disorder gets repaired by enzymes before an altered protein is produced.

Scientists have changed the DNA of a type of cabbage so that it contains a tiny amount of poison from a scorpion’s tail. The poison in the cabbage kills caterpillars that try to eat it. This is an example of

What is a possible advantage of genetically modified crops?

All of the squirrels, grass, oak trees, and turtles in a forest would be considered a

Genetic engineering is the manipulation of genes using cloning and transformation to change the gene structure. Genetic engineering has many positive outcomes. For example,

There is a pond behind Serge's house. There are lots of catfish swimming in this pond. Trees ring the pond and rushes and irises live at the pond's edge. The bottom of the pond is sandy and Serge likes to pick up flat rocks from the shallow water and skim them across the top of the water. This summer, Serge has seen lots of dragonflies and mosquitoes at the pond also. All the catfish that live in the pond behind Serge's house make up a ___________ of catfish.

What is the biggest difference between an ecosystem and a community?

Ecologists study how relationships between biotic and abiotic factors impact the many levels of organization on earth. What level of organization is defined as a living thing that can function on its own with the ability to reproduce, respond to environmental stimuli, maintain an internal environment, and metabolize food and excrete waste?

Ecologists study how relationships between biotic and abiotic factors impact the many levels of organization on earth. What level of organization is defined as the interaction between organisms in a community and the environment in which they live?

Some soils, like clay, hold water tightly. Other soils, like sand, let the water run through. What property of soils is MOST IMPORTANT in determining how water moves through the soil?

This a symbiotic relationship where both species benefit.

The uppermost horizon, horizon O, in this profile is composed mostly of _________, while the lower horizon, horizon C, is composed mostly of _______.

Any abiotic or biotic factor in an ecosystem that causes a population’s size to slow or decrease is a ____________ factor.

A lion would be considered a ________ of a gazelle.

Scientists hypothesize that there are no dinosaurs alive today because

Both snakes and hawks eat shrew. The shrew would be considered ____ for the snake and hawk.

The clown fish is a species of fish that lives between the stinging tentacles of sea anemones. The clown fish protects the anemone from anemone eating fish, while the anemone’s tentacles protect the clown fish from predators. The relationship between clown fish and anemone is an example of

How do the elephants help to maintain the population of birds that you can see perched on their backs?

Flies are food for trout and bears eat trout. According to the food chain, trout are a major source of food for bears. What would happen to the bear population if the trout population became significantly smaller?

What is the BEST description of the difference between predation and parasitism?

How can a population decrease in size?

On a farm, there has been a sudden spike in the rodent population, causing an increase in crop damage and, as a result, loss of income. What practice might have contributed to the spike in the rodent population?

The grass is the base of this food pyramid. The grass produces energy to support the entire pyramid or food chain through what process?

In which situation would a resource be considered a limiting factor?

All BUT one is an example of a invasive species. That is

How do you think a food web would be affected if the plants were eliminated?

Zebra mussels are native to Poland and the Soviet Union. They were probably transported to the United States via trans-oceanic vessels. With no natural predators in the United States, zebra mussels

A major cause of biodiversity loss and species extinction in North Carolina is due to the introduction of invasive non-native species in the ecosystem. Many invasive species come for the similar climatic conditions where they can thrive, but most arrive by human transport on accident or on purpose. Some examples include: Bradford pears, Japanese honeysuckle, Asian carp, and brown tree snake. What is NOT an impact that an invasive non-native species has on an ecosystem?

In many tropical areas, rain forests have been clear cut in an effort to grow food crops. This effort has not been successful because tropical rain forests

The decayed organic matter in soil is called

Which term describes how easily water passes through soil?