Answer:
The correct answer is -Sponges lack true tissue but have morevariation in cell type than animas in oter phylum.
Explanation:
Sponges are belong under phylum porifera which have diverse form encrusting sheets to volcano shaped mounds.
The tubes that contain in their body are differ in size from millimeter upto one meter.
The poriferans contain canal system and with help of this, they pump water which enters through a specialed pores called ostia that flows through canal called spongocoel and finally the water exits from their body through oscula.
The sponges show complex organization as their body contain single tube with 2 cell layer thick.
Ascon,leucon,sycons are the level of complexity.
The purple spots on the colorless background of corn kernels observed by Barbara McClintock were the result of the transposition of the Ds elements out of the color gene.
<h3>What are the genetic elements found in corn?</h3>
- A transposable element is removed from one spot in the DNA and inserted into a different site in the DNA during the process of genetic transposition, which allows genes to shift their location on chromosomes.
- The first recognized genetic instability was caused by genetic transposition.
- The size of the tissue patch displaying the reversion phenotype increases as a reversion event happens earlier in the kernel development.
- Barbara McClintock saw purple dots on maize kernels with an otherwise colorless background.
- These spots were caused by the Ds components of the color gene being transposed.
- The wild-type (purple) phenotype manifests itself in cells where Ds from the color gene "C" sequence has been lost.
Hence, Barbara McClintock discovered purple patches on the colorless backdrop of maize kernels due to the transposition of the Ds elements out of the color gene.
To learn more about Transposition refer to:
brainly.com/question/13447171
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<span>Out of the following given
choices;</span>
A. The Geiger counter
being used to detect radiation is broken.
B. Two or more samples
we accidentally swapped, causing confusion.
C. A virus contaminated
the reaction in which the probe was made.
D. The human genome
might contain at least one viral gene.
The answer is D. This means that the viral DNA inserted itself
in the human tissue DNA aand became a prophage. A prophage is a latent form of
viral infection where the inserted viral DNA has no interference with the host
cell biochemical processes. The prophage will be present in the daughter cells
of the host cells.
Answer: the population of wolves decreases between 15 and 20 years
Explanation:
when there are less predators killing the prey, the poulation of the prey will increase as they can breed.
