S1. T/V: Primates have opposable thumbs nails, and forward facing eyes 2T/F:urin

Question

S1. T/V: Primates have opposable thumbs nails, and forward facing eyes 2T/F:uring evolution of the animal kingdoms, the first skeletal structures to be mineralized are those associated 53Jaws first occurred in which group of tshes? a. lamprey c. ray finned fish e. planaria 54. Which of these are amniotes? a. finh b. amphibians c egg-laying mammals e. more than one of these is correct 55. Which two species are the most closely related? a. b. e Species A and B have 92% similarity in their DNA sequence. Species A and C have 80% similarity in their DNA sequence. species B and C have 94% si ilarity in their DNA se uence. .to each other. The genes are within one species Original 56. A and B genes are a Orthologs 5 Paralogs c. Hemologs Page 1 7

Explanation / Answer

Ans51.. primates have opposable thumbs ,nails and forward placing eye. These sentence are true...primates have opposable thumb that allow to grab and manipulate the object.

Primates have forward facing eye that give them binocular vision and stereoscopic vision. They also have nails instead of claw....

Ans53...Jaw first appear in chondrichythes( cartilaginous fish).example-shark,ray,and chaemara..these fish have cartilaginous skeleton lacking of bone

Ans54-Amniotes are egg laying animals includes reptiles,bird mammals..amniotes lay their egg on land or retained the feetilized egg with in the mother body and disntingudist from anamniotes(fish and Amphibia) which lay their egg in water..

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