Midterm Study Guide Pt. 4

Question 1

What are some of the genetic traits discussed in lab?

Answer 1

PTC Tasting 
Color-blindness 
Ear lobes
Tongue Rolling
Mid-digital hair
Bent Little finger 
Interlocking fingers
Hitchhiker's thumb

Question 2

Which genetic traits (discussed in lab) are dominant?

Answer 2

PTC Tasting 
Free Ear lobes
Tongue Rolling
Mid-digital hair
Bent Little finger 
Left Interlocking fingers

Question 3

Which genetic traits (discussed in lab) are recessive?

Answer 3

Color-blindness
Attached Ear lobes
Right Interlocking fingers
Hitchhiker’s thumb

Question 4

What four nucleotides are used in DNA?

Answer 4

1. Adenine (A)
2. Thymine (T)
3. Guanine (G)
4. Cytosine (C)

Question 5

Each nucleotide, when it come to DNA, binds:
A __
__ G

Answer 5

T

C

Question 6

Each nucleotide, when it come to DNA, binds:
__ T
C __

Answer 6

A

G

Question 7

DNA Replication:

1. An enzyme called a ___ _______ unwinds the DNA strands, separating the weak hydrogen bonds between the nitrogenous bases holding the two strands together
2. Another enzyme called ___ ________ then builds a new complementary strand to each of the single ‘parent’ strands
3. The result is two new DNA molecules each composed of one _______ ______ strand and one _____ _________ strand

Answer 7

DNA helicase
DNA polymerase
original parent
newly synthesized