Human Impact on the Environment — Cumulative exam Answers

A strand of DNA contains the bases adenine, cytosine, cytosine, and guanine, in that order. Which would be the order of the bases on the opposite strand of DNA?

In roses, red flowers and long stems are dominant traits. A rose plant that is homozygous for both red flowers and long stems is crossed with a rose plant that is heterozygous for red flowers and homozygous for short stems. What percentage of the offspring will exhibit red, long-stemmed flowers?

Which step in transcription occurs first?

In rock layers, jellyfish fossils are found lower than trilobite fossils, and trilobite fossils are found lower than ammonite fossils. What can be determined from this information?

What is most likely to happen to a population of mice that becomes isolated on an island?

Which factors affect natural selection?

Which agent would cause the least damage to a chromosome?

Carlos is collecting data about the length of earthworms in his backyard. The shortest worm he found is 4 inches long; the longest worm is 8 inches long. If most of the worms are either short or long, which type of distribution is displayed in the population?

Black fur in cats is inherited though simple dominance. In the pedigree chart below, black indicates black fur and white indicates white fur. This pedigree chart might be used to help a cat breeder produce kittens that have white fur only.Which individual in the third generation should the cat breeder choose to breed a litter of kittens that are all white?

What is the primary source of energy for food chains in an ecosystem?

How does mining impact the environment?

Which does not occur during translation?

Laura's mother is shown in the image. Which trait is Laura least likely to inherit from her mother?

Pedigrees help geneticists understand how traits are inherited between generations. Red-green color blindness is a sex-linked disorder that is determined by a recessive allele on the X chromosome.If Brian has a son who is color-blind, what is known about the genotype of the son's mother?

A muskrat population is growing exponentially. What might cause this population to enter logistic growth?

Which represents the cross between parent plants if one is heterozygous and has yellow-colored pods and the other is homozygous and has green-colored pods?

A student argues that two species of birds are the same species because they have similar body structures, similar DNA, and similar beaks. Another student argues that the birds are different species because they have different color patterns and have a different mating season. Which piece of evidence supports the second student's argument?

Natural resources are classified as renewable and nonrenewable. What is the difference between the two?

Consider the cladogram.According to the cladogram, which characteristic was used to separate bony fish from amphibians?

A relationship in which one organism benefits while the other is neither harmed nor helped is called