The p53 protein is a transcription factor that plays an important role in cancer. Discovered in 1979, it binds to DNA and promotes the expression of genes that must repair cellular damage. The p53 protein controls the cell cycle and interacts with dozens of genes.

3 0

3 years ago

Read 2 more answers

The major means of propulsion through the alimentary canal is peristalsis.

goldfiish [28.3K]

<h2>Peristalsis </h2>

Explanation:

Peristalsis is simply a series of muscle contractions, these contractions occur in the digestive tract
Peristalsis is also observed in the tubes that connect the kidneys to the bladder
Peristalsis is an automatic and important process which moves: food through the digestive system, urine from the kidneys into the bladder and bile from the gallbladder into the duodenum
Peristalsis is a normal function of the body and can sometimes be felt in the belly (abdomen) as gas moves along

6 0

3 years ago

Natural selection means

borishaifa [10]

Pretty sure that the answer is A

5 0

2 years ago

In the the fruit fly Drosophila, there is a dominant gene for normal wings and its recessive allele for vestigial wings. At anot

Irina18 [472]

Answer:

Explanation:

According to linkage theory, two genes present on the same chromosome tend to get inherited together. So the gametes produced are not equal in number and parental type offspring are observed more in number than the new recombinant types.

Here, normal wings, red eyes (420) and vestigial wings, purple eyes (430) are most in number hence they are the parental type offspring.

Vestigial wings, red eyes = 80 : recombinant

Normal wings, purple eyes = 70 : recombinant

Distance between two genes in cM = recombination frequency = (total number of recombinants / total progeny)*100

= [(80+70)/(420+80+70+430)]*100

= (150/1000)*100

= 0.15*100 = 15cM

8 0

3 years ago