Answer:
Methotrexate inhibits the synthesis of DNA, RNA, and protein synthesis of the cells in the experiment.
Explanation:
Methotrexate competitively inhibits the enzyme dihydrofolate reductase (DHFR) which is involved in the synthesis of tetrahydrofolate from the inactive dihydrofolate. The methotrexate blocks the enzyme by binding to its active site thereby preventing further reaction of the dihydrofolate reductase enzyme and dihydrofolate. Tetrahydrofolate is a useful material for the de novo synthesis of thymidine, a nucleoside. And without thymidine, DNA synthesis is hindered. Methotrexate therefore inhibits the synthesis of DNA, RNA, thymidylates and of course protein synthesis.
Question 1
Answer:
D- Different nucleotide combinations code for the same amino acid.
Explanation:
Some amino acid has more than one nucleotide combination coding for it.
Question 2
Answer:
B- Redundancy
Explanation:
Redundancy means that more than one codon is assigned for the coding of most amino acids.
Question 3
Answer:
0%
Explanation:
Since both parents are homozygous dominant and recessive respectively, no crossing can give the homozygous dominant as all offspring are heterozygous.
Question 4
Answer:
Homozygous.
Explanation:
The genotype 'dd' is homozygous since the two letters are both in the lower case.
Question 5
Answer:
25%
Question 6
Answer:
Dihybrid cross
Answer:
How about you tell what ur answers and ill see if there wrong and help u with them ..?
is that okay?
we all have our own school work to do so ill try and help just give me ur answers :)
Explanation:
Answer:
Usually girls do that when the guy has done something wrong. Or she could be dealing with something. There is no need to feel sad just be paitent! <3
Explanation:
