evolution

How is the scientific theory of evidence supported by the comparison of skulls and skeleton of modern humans and extinct hominids?

• By making the hip, skull and spine comparison, the age of different hominid specimens can be determined.

• Comparison of skull and skeletons provide evidence that humans and different hominid species existed

• Similarity in skull shapes, hands and hips between extint hominids and humans supports a common ancestry.

• Skull and skeleton comparisons can explain why hominids were inferior and became extinct while humans evolved.

The scientific theory of evolution is supported by different types of evolution. The diagram below shows the skeleton of two different animal species.

How does comparing the skeletons of these animals provide support for the scientific theory of evolution?

• It provide information about the organism's habitat.

• It shows possible common ancestry between organisms.

• It provides information to determine the organism's age.

• It shows possible chromosomal similarities between organisms.

The picture below shows limbs of four different species.

The four species illustrated most likely have similar limb structures because they all

• share a common ancestor

• use their limbs for the same functions

• occupy the same level in the food pyramid

• adapted to the same environmental conditions

The diagram showing the evolution of eight bird species is shown below.

The differences in the species are most likely a result of

• length of mating season

• population size

• color of feather

• available food source

A scientist compares DNA taken from four different living species.

Which of the following statements is accurate?

• Species X and Y share a recent common ancestor

• Species Y and species Z can interbreed

• Species A and species Y are the same.

• Species Z evolved from species Y

What best describes the hind leg bones seen in the whale?

• Analogous structures to the fins of the living fish.

• Vestigial structures that had a function in an ancestor

• Fossil structures from an extinct ancestor

• Homologous structures to the wings of butterflies

Some organisms have features that have different functions, but similar structures. One example is the forelimb of humans, dogs, birds and whales.

What term best describes the relationships between these forelimbs?

• They are homologous

• They are embryological

• They are analogous

• They are vestigial