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valina [46]
3 years ago
13

Two species might have similar skeletal structures that have different functions. what do these types of structures suggest abou

t the relationship between the two species?
Biology
1 answer:
MArishka [77]3 years ago
6 0
That they once were the same but due to genetic mutation, have changed
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During metaphase, the chromosomes are ______.
lesya692 [45]

Answer:

During metaphase, the cell's chromosomes align themselves in the middle of the cell through a type of cellular "tug of war." The chromosomes, which have been replicated and remain joined at a central point called the centromere, are called sister chromatids.

3 0
3 years ago
Your son has not had the MMR vaccine (measles, mumps, rubella) because you are apprehensive about vaccines and their side effect
natali 33 [55]

Answer:E.

Explanation:The MMR mostly affects children and if not administered vaccine in time to save a respond that prevent subsequent reoccurence of infection, it will lead to severity of infection (secondary infection ) probably if resurfaced at adult stage.

7 0
3 years ago
List ten factors which can be involved in regulating bacterial gene expression (includes specificity and level of expression). "
nirvana33 [79]

Answer:

At least 6 were provided:

1. Transcription.

2. Chromatin domains.

3. mRNA degradation.

4. RNA transport.

5. Translation.

6. Post-transcriptional modification.

Explanation:

Chromatin domains.

Changes to the epigenome can result in changes to the structure of chromatin and changes to the function of the genome.

Transcription.

During transcription, a DNA sequence is read by an RNA polymerase, which produces a complementary, antiparallel RNA strand called a primary transcript.

Post-transcriptional modification.

is a set of biological processes common to most eukaryotic cells by which an RNA primary transcript is chemically altered following transcription from a gene to produce a mature, functional RNA molecule that can then leave the nucleus and perform any of a variety of different functions in the cell.

RNA transport.

mRNA is created during the process of transcription, where the enzyme RNA polymerase converts genes into primary transcript mRNA (also known as pre-mRNA). This pre-mRNA usually still contains introns, regions that will not go on to code for the final amino acid sequence.

Translation.

In translation, messenger RNA (mRNA) is decoded in the ribosome decoding center to produce a specific amino acid chain, or polypeptide.

mRNA degradation.

Different mRNAs within the same cell have distinct lifetimes (stabilities). In bacterial cells, individual mRNAs can survive from seconds to more than an hour. However, the lifetime averages between 1 and 3 minutes, making bacterial mRNA much less stable than eukaryotic mRNA.

3 0
2 years ago
What soil composition would be best for availability of nutrients, water, and root development? A. equal amounts of sand, clay,
Travka [436]

Soil composition would be best for availability of nutrients, water, and root development higher proportion of humus; lower amounts of clay and sand

Compared to the lower soil layers, the topsoil or surface soil often includes more organic matter and air but less clay. The topsoil typically has the highest concentration of plant roots and is more fertile than the other layers.

  • Nutrient management includes managing the composition of the soil. Minerals, organic material, water, and air are the fundamental elements of soil. Typically, 45% of the soil is made up of minerals. 5% organic material 20–30% water and 20–30% air are used. At best, these percentages are merely generalizations.
  • Numerous nutrients are found in soil, which are obtained from dead plants and animals. The plants eat these nutrients as nourishment. So soil contributes to the growth of plants by giving them sustenance in the form of nutrients.

To learn more about Soil composition it visit : brainly.com/question/15015701

#SPJ4

3 0
1 year ago
Gastric juice is produced by the stomach.<br><br> TrueFalse
Elina [12.6K]
True. Definition of gastric juice: a thin, clear, virtually colorless acidic fluid secreted by the stomach glands and active in promoting digestion.
3 0
3 years ago
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