Guppies that live in an area without predators are colorful. Guppies that live in an area with predators are not colorful.
The predators in an area die because of disease.
Which of these is most likely to happen to the guppy population in this area over time?
Complete the following statement with the options provided below:
There will be in the number of colorful guppies because due to disease.
This is an example of because .
The table (below) shows the survival rate of two types of beetles in the same environment over a period of three years.
Which statements about the beetles in this environment is best supported by the data?
Select TWO correct answers:
White-tailed deer are seasonal breeders. Female white-tailed deer begin their reproductive cycle in the fall. Rising testosterone levels in male white-tailed deer cause them to start their breeding season around the same time. Offspring are born the following spring and summer.
What is the most likely explanation for white-tailed deer having a seasonal breeding cycle instead of a monthly breeding cycle like many domesticated animals?
The bar graph shows the average break depth (distance from the top of the beak to the bottom) of a population of finches. The data were collected in 1976 and 1978, after a drought occurred in 1977 in the area.
Which factor BEST describes the change in this population of finches?
The figure shows fossilized and living stalk-eyed flies from the family Diopsidae. In fossils, the eye spans of the flies are much smaller than those of living flies.
Which question would BEST help determine whether the change in eye span in stalk-eyed flies influenced by natural selection?
The picture (below) shows what the environment was like both before and after the Industrial Revolution. Industrialization in England produced black soot (powder) that covered many tree trunks and branches. At about the same time, the number of light-colored moths in this part of the country began to decrease over time.
Why did the light colored moth population decrease over time?
The salamanders of the genus Ambystoma in northeastern North America are an entirely female population that reproduces asexually through the process of cloning. However, they have developed a way of inserting DNA from other species of salamanders into their own DNA.
How has DNA from other salamander species helped these Ambystoma salamanders survive environmental changes over the past 6 million years?
Most animals avoid eating monarch butterflies due to their bad taste. Viceroy butterflies look very similar to monarchs.
Which of these best explains how the viceroy butterfly benefits from looking like the monarch butterfly?
A new predator of rabbits has been introduced within an ecosystem. This new predator runs faster than the native predators of rabbits.
Which statement describes what will most likely occur in the rabbit population due to the introduction of the new predator?
The aye-aye lemur is a mammal that feeds mostly on insect larvae that live inside trees. The aye-aye lemur has a specialized middle finger that is long and thin. The aye-aye lemur moves along a tree branch and taps the branch with its specialized finger.
When the aye-aye lemur hears a difference in echo, it will tear open the bark with its teeth until the insect tunnel is exposed (visible). The aye-aye lemur then uses its specialized finger to reach the insect larvae and remove it to eat it.
Which selective pressure most likely resulted in the development of the aye-aye lemur's special adaptation?
Adaptations that result from Natural Selection are expected to increase the fitness of an organism. In terms of Natural Selection, which of the following best describes fitness?
The Florida panther (Puma concolor coryi) population had declined to approximately 20 to 30 individuals as a result of habitat loss and hunting. Many of the panthers had genetic mutations due to inbreeding that affected their ability to reproduce and survive. Female Texas (Puma concolor stanleyana) pumas were introduced into Florida to mate with the endangered population of panthers. Hybrid panthers had more genetic variation and reproductive success than the Florida panthers.
Which table best represents the mechanism of evolution and the effect on the gene pool of the Florida population?
The cross-pollination of flowers from the two different populations by bees will most likely result in-
Conservational biologists studying cheetah populations have determined that the lack of genetic diversity among the cheetahs is due to genetic drift.
Which statement explains the most likely consequence of having a low genetic diversity on the cheetah population?
A phylogenetic tree based on genetic similarities is shown.
Which numbered location on the phylogenetic tree identifies characteristics shared by species B, C, and D?
Cytochrome C is a protein that is found in the mitochondria of all aerobic eukaryotic cells. The gene sequence for cytochrome c has been mapped and analyzed for thousands of species. The table shows the percentage of the cytochrome c amino-acid sequence that different species have in common.
Which list is ordered from the species most closely related to the mouse to the species least closely related to the mouse?
This cladogram shows the evolutionary relationships among some mammals based on homologous structures.
Which statement is supported by this cladogram?
Scientists can determine relatedness among organisms by comparing partial amino acid sequences. The table (below) shows five partial amino acid sequences from five different organisms.
Which organism is most closely related to the horse? Provide evidence to support your claim.
A cladogram of five species is shown.
Based on the cladogram, the ancestral species most likely had —
Two scientists studied patterns of evolution in the fossil record. Many species they analyzed showed periods of slow changes interrupted by a period of rapid change.
This pattern of periods of slow change interrupted by periods of rapid change with few, if any transitional fossils, best describes the theory of-
The diagram (below) shows data on the evolution of adult horses.
The data in the diagram is evidence that...
Over time, Natural Selection caused a change in the moth population mentioned in the question above.
Which of the following most likely occurred as the result of Natural Selection?
When the cross-pollination of these flowers contributes to the gene pool of the population, which of these most likely increases?
