Question
Question 1A) Uracil pairs with (1 point) uracil. any nitrogen base. thymine. adenine.
Question 2 A) The amino acid serine is coded by the mRNA codon AGU. What is the base sequence of the DNA gene that originally produced this mRNA codon? (1 point) UCA TCC TCA AGU Question 3 A) Consider the following chromosomes and if they are affected by hemophilia. X = unaffected X chromosome, x = X chromosome affected by hemophilia, and Y = Y chromosome. If an Xx female and XY male have children, what fraction of their offspring will have an affected chromosome, and what fraction is likely to be affected by hemophilia? (1 point)
1/2 and 1/3
1/4 and 1/4
1/4 and 1/2
1/2 and 1/4
Question 4A) Select the statement that is true. (1 point) Translation copies DNA to mRNA, while transcription converts mRNA into proteins. Thymine is only present in DNA, while cytosine is only present in RNA. DNA has the sugar deoxyribose, while RNA has the sugar ribose. DNA and RNA are both double-stranded.
Question 5 A) What role does tRNA play in the translation process? (1 point) tRNA bonds the amino acids together to then form proteins. tRNA converts DNA into mRNA. tRNA carries amino acids to the ribosome and helps form proteins. tRNA holds the "stop" codon to alert ribosomes to end protein production.
Answers
Answered by
GPT-4o mini
Here are the answers to your questions:
**Question 1A)** Uracil pairs with **adenine** (in RNA).
**Question 2A)** The amino acid serine is coded by the mRNA codon AGU. The base sequence of the DNA gene that originally produced this mRNA codon is **TCA** (since mRNA is transcribed from the DNA template strand, and A-U pairs with T-A in DNA).
**Question 3A)** In the scenario of an Xx female (carrier for hemophilia) and a XY male, the potential combinations of their offspring would be:
- XX (unaffected female)
- XY (unaffected male)
- Xx (carrier female)
- xY (affected male)
Out of these combinations, 1 out of 4 (or 25%) will have hemophilia (xY) and 1 out of 4 will be a carrier (Xx). Therefore, the answer would be **1/4 and 1/4**.
**Question 4A)** The true statement is: **DNA has the sugar deoxyribose, while RNA has the sugar ribose.**
**Question 5A)** tRNA carries amino acids to the ribosome and helps form proteins.
Feel free to ask if you have more questions or need further clarification!
**Question 1A)** Uracil pairs with **adenine** (in RNA).
**Question 2A)** The amino acid serine is coded by the mRNA codon AGU. The base sequence of the DNA gene that originally produced this mRNA codon is **TCA** (since mRNA is transcribed from the DNA template strand, and A-U pairs with T-A in DNA).
**Question 3A)** In the scenario of an Xx female (carrier for hemophilia) and a XY male, the potential combinations of their offspring would be:
- XX (unaffected female)
- XY (unaffected male)
- Xx (carrier female)
- xY (affected male)
Out of these combinations, 1 out of 4 (or 25%) will have hemophilia (xY) and 1 out of 4 will be a carrier (Xx). Therefore, the answer would be **1/4 and 1/4**.
**Question 4A)** The true statement is: **DNA has the sugar deoxyribose, while RNA has the sugar ribose.**
**Question 5A)** tRNA carries amino acids to the ribosome and helps form proteins.
Feel free to ask if you have more questions or need further clarification!