1* 1.
a.
Which of these best explains why birds and dogs both show gills in their early
development?
Both organisms can breath underwater
Both organisms share a common ancestor
Both organisms use them to process food when they are young
Both organisms have different ways of forming their lungs
b.
C.
d.
a
b
с
d

The body is protected against harmful flu viruses by

Refer to the family pedigree shown here. in generation i, one parent is affected by the gene mutation and one parent isn't. in generation ii, all three children are affected by the gene mutation. what can you conclude about this gene mutation? a. all children born in future generations will be affected by this disorder. b. this gene mutation is a dominant disorder. c. this gene mutation is a recessive disorder. d. the generation i mother is a carrier of this gene mutation.

Animals that have thick fur and ae able to store large amounts of body fat live where ?