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diamong [38]
3 years ago
12

The primer for DNA synthesis is an RNA molecule formed by the enzyme ________________.

Biology
1 answer:
Afina-wow [57]3 years ago
5 0

Answer:

Primase

Explanation:

Primase is a form of RNA polymerase enzyme that is involved in DNA replication which catalyses the production of small segment of DNA or RNA called primer complimentary to a short stranded DNA template.

The RNA molecule is later removed by 5' to 3' exonuclease and the DNA later filled it and occupy the position.

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When pink sweet peas were self-pollinated and the seeds were collected and sown, the following flower colors were obtained: Red
Pavlova-9 [17]

Answer:

c. 1:2:1

The results are consistent with incomplete dominance for this trait, with pink flowers being heterozygous.

Explanation:

If flower color were determined by a gene showing incomplete dominance, the possible genotypes and phenotypes are as follows:

  • RR- red
  • ww - white
  • Rw - pink

If pink sweet peas are self-pollinated, then a cross between two heterozygous individuals is done (Rw x Rw).

<u>From this cross the expected ratios are:</u>

  • 1/4 RR (red)
  • 2/4 Rw (pink)
  • 1/4 ww (white)

So the null hypothesis is that the observed results exhibit a 1:2:1 ratio.

<h3><u>Chi square test</u></h3>

X^{2} = \sum \frac{(Observed - Expected)^2}{Expected}

<u>The observed frequencies were:</u>

  • 34 Red
  • 76 Pink
  • 40 White

Total 150

<u>The expected frequencies for our null hypothesis are:</u>

  • 1/4 x 150 = 37.5 Red
  • 2/4 x 150 = 75 Pink
  • 1/4 x 150 = 37.5 white

X^{2} = \frac{(34- 37.5)^2}{37.5} + \frac{(76- 75)^2}{75} + \frac{(40- 37.5)^2}{37.5}

X^2=0.5067

The degrees of freedom (DF) are calculated as number of phenotypes - 1; in this case DF = 3-1 = 2.

If we look at the Chi square table, for 2 DF and a probability of p0.05, the critical value is 5.991

Our X^2 value of 0.5067 is less than the critical value, so we do not reject the null hypothesis. The results are consistent with incomplete dominance for this trait, with pink flowers being heterozygous.

8 0
3 years ago
Whats the correct answer answer asap for brainlist
Damm [24]
4
Because there are 4
6 0
1 year ago
What is the displacement for a driver who travels 10 km to get to a point that is 4 km from his starting point? 10 km 6 km 4 km
puteri [66]

4 km I really hope this helps!!!!!!!!!!!!!!!!

4 0
3 years ago
What kind of material is transported through osmosis?
____ [38]

Answer:

Blood

Explanation:

it is the answer

4 0
3 years ago
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To teach an animal to perform a complex sequence of behaviors, animal trainers are most likely to use a procedure known as.
Softa [21]
Shaping. Each step in the learning process is called an approximation. An animal may be reinforced for each successive approximation toward the final goal of the desired trained behavior. Animals learn complex behaviors through shaping.
8 0
2 years ago
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