biology

Part I

During transcription , the information in the template strand is read in the 3 '-5 ' direction (Murray , Granner Rodwell , 2006 . Therefore , for simplicity we shall invert the given sequence , 5 '-TACTTCTTCAAGACT-3 into

3 '-TCAGAACTTCTTCAT-5 (Note : Template strands should always be read from 3 '-5 ' direction and not the other way around . If the given a template strand is from 5 '-3 direction , one should invert it first before continuing to avoid confusion

The addition of bases during the RNA synthesis will be in the 5 '-3 direction . The rule

of complementary base pairing still applies but instead of thymine , uracil is used to base pair with adenine (Murray Granner Rodwell , 2006 . Therefore , the RNA transcript will be

5 '-AGUCUUGAAGAAGUA-3

The peptide product of the RNA transcript after translation will be

serine-proline-glutamic acid-glutamic acid-valine

Therefore , the first codon codes for the amino acid serine while the last codon codes for valine

Part II

Punnett Square

AB x BB B B

A AB AB

B BB BB

Figure 1 . The Punnett Square showing a cross between two individuals with blood genotypes AB and BB

1 . What are the possible blood types for the offspring

There are only two possible blood types for the offspring , blood type AB and blood type B

2 . What are the ratios or percentages for each possible blood type from this cross

The probability of having a child with blood type AB or blood type B is 50

3 . What blood type is not possible from this...