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oksano4ka [1.4K]
2 years ago
6

100 POINTS!!

Biology
2 answers:
alexgriva [62]2 years ago
7 0

Answer:

Changes in gene expression

Explanation:

Brilliant_brown [7]2 years ago
3 0

Answer:Changes in gene expression

Explanation:

This phenomenon is the result of changes in gene expression. That means, how the information in the DNA is used by the cell. The genes that are active in the cells of the brain will be very different from the genes that are active in the cells of the bone marrow.

These patterns of gene expression are different for each cell, and dictate the identity of that cell. Gene expression patterns are controlled by a variety of factors in the cell that allow tissue-specific expression, such a transcription factors.

This can also be facilitated by another layer of regulation called epigenetics, which literally means "on top of" genetics, and refers to modifications of DNA (and the proteins around it), that can reflect and influence the activity of the genes within.

Explanation: or An organism's DNA serves as an instruction booklet of sorts for how to create the organism. In this analogy, one cell type reads one chapter of this genetic instruction manual, and another cell type reads a different chapter. Specific genes are turned off and on to control gene expression for compounds needed by different tissues of the body to allow differentiation into various cell types.

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All of the following except __________ developed in some vascular plants and are not present in any nonvascular plants.All of th
dem82 [27]

Answer:

Vascular plants have separate tubular tissues such as xylem, phloem for smooth transport of water, minerals and food while non-vascular plants do not show these attributes.

Explanation:

Although both life cycles are divided between the sporophytic and gametophytic generations, vascular plants have a dominant diploid sporophytic phase while non-vascular plants have a dominant haploid gametophytic phase.

Non-vascular plants are poikilohydric (they can withstand dehydration and can recover without any damage to their tissues), though they cannot control the water level in their cells and tissues. On the other hand, vascular plants are homoiohydry. They can survive in any habitat and can control the water content in cells and tissues, though they have low capacity to survive dessication compared to the non-vascular plants.

Non-vascular plants do not have true leaf. The leaves are mere chlorophyll containing. Photosynthesized food are directly sent from one cell to the other. They lack proper transport mechanism for food and water.

On the other hand, the vascular plants have complex multilayered leaf (cells) structure. The waxy layer cuticles on the leaves prevent dessication. That are more chlorophyll containing than their counterpart.

3 0
3 years ago
Help me please if you can
Snezhnost [94]

Answer:

1st one is right answer ...

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5 0
3 years ago
Who spoke yo Samuel on The 4 occasion he was awoke
Katen [24]

Answer:

God

Explanation:

1. Went to Samuel

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3 0
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A mutation is any mistake or change in the
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zygote

Explanation:

or the mode of reproduction

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The scientist who suggested that energy can be created under certain conditions was a. Newton. b. Einstein. c. Wright. d. Pascal
vivado [14]
Hey there!

The scientist that suggested that energy can be created under certain conditions was Einstein

Hope this helps!
4 0
3 years ago
Read 2 more answers
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