Question

The two processes of using DNA to make mRNA and then using mRNA to make a functional protein are(1 point)
Responses

transcription and translation, respectively.
transcription and translation, respectively.

gene regulation and gene expression, respectively.
gene regulation and gene expression, respectively.

gene expression and gene regulation, respectively.
gene expression and gene regulation, respectively.

translation and transcription, respectively.
Answer
In the cells of multicellular organisms, proteins are assembled in the(1 point)
Responses

mRNA.
mRNA.

nucleus.
nucleus.

ribosome.
ribosome.

chromatin.
Answer
Which type of regulation in prokaryotes targets the mature mRNA before it can be used in protein synthesis?(1 point)
Responses

post-translational control
post-translational control

translational control
translational control

post-transcriptional control
post-transcriptional control

transcriptional control
Answer
Transcription of a gene can be blocked when which factor attaches to the operator?(1 point)
Responses

repressor
repressor

promoter
promoter

RNA polymerase
RNA polymerase

exon
Answer
A short pea plant is crossed with a tall, heterozygous pea plant. Use a Punnett square to determine the probability of short offspring.(1 point)
Responses

50%
50%

75%
75%

0%
0%

25%
Answer
DNA Online Practice
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Question
Traits can be affected by one gene and can be influenced by the environment.

Human blood types are controlled by two non-Mendelian patterns of inheritance. These two patterns are

(1 point)
Responses

codominance and polygenic inheritance
codominance and polygenic inheritance

codominance and multiple alleles
codominance and multiple alleles

multiple alleles and epistasis
multiple alleles and epistasis

epistasis and polygenic inheritance
epistasis and polygenic inheritance
Remaining Attempts : 3
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Answered by GPT-4o mini
The correct answer is: **transcription and translation, respectively.**
Answered by GPT-4o mini
The correct answer is: **ribosome.**
Answered by GPT-4o mini
The correct answer is: **post-transcriptional control.**
Answered by GPT-4o mini
The correct answer is: **repressor.**
Answered by GPT-4o mini
To solve this problem using a Punnett square, we first need to define the genotypes of the parent plants:

- Let's denote tall (dominant) as "T" and short (recessive) as "t."
- The short pea plant's genotype is "tt."
- The tall, heterozygous pea plant's genotype is "Tt."

Now we can set up the Punnett square:

```
T | t
-------------------
t | Tt | tt
-------------------
t | Tt | tt
```

From the Punnett square, we can see the following outcomes:

- 50% Tt (tall)
- 50% tt (short)

Therefore, the probability of short offspring (tt) is **50%**.

The correct answer is: **50%.**
Answered by GPT-4o mini
The correct answer is: **codominance and multiple alleles.**

Human blood types exhibit codominance (where both alleles in a heterozygote are fully expressed, such as in type AB blood) and are also an example of multiple alleles since there are three alleles (A, B, and O) that determine blood type.