Question

humans and chimpanzees share what percentage of their dna in common?

98
90
70
20

question 3
primates teeth are unique because they are:

blunt
sharp
homodont
heterodont

question 4
the mode of locomotion used by gorillas is known as:

bipedalism
knuckle-walking
brachiation

Explanation:

Analyze genetic similarity between humans and chimpanzees

We evaluate the genetic relationship between humans and chimpanzees.
Using the Primate Evolution knowledge point, genetic studies show that humans and chimpanzees share approximately 98% to 99% of their DNA sequence, reflecting a close evolutionary relationship and a relatively recent common ancestor.

Examine primate dental characteristics

We analyze the unique features of primate dentition.
Using the Comparative Anatomy knowledge point, primates possess heterodont dentition, meaning they have different types of teeth (incisors, canines, premolars, and molars) serving specialized functions, unlike homodont organisms which have uniform teeth.

Identify gorilla locomotor behavior

We determine the primary mode of locomotion for gorillas.
Using the Locomotor Adaptations knowledge point, gorillas are specialized terrestrial quadrupeds that utilize knuckle-walking, where they walk on the dorsal surfaces of their middle phalanges to support their heavy body weight.

Answer:

Question 1

• (A) 98 (Correct answer)
• (B) 90
• (C) 70
• (D) 20

Question 3

• (A) blunt
• (B) sharp
• (C) homodont
• (D) heterodont (Correct answer)

Question 4

• (A) bipedalism
• (B) knuckle-walking (Correct answer)
• (C) brachiation