All categories

2 years ago

3. look at the illustration in figure 25-2. which letter points to the endoderm

Biology

2 answers:

nirvana33 [79]2 years ago

5 0

3. The correct answer is C. Endoderm refers to one of the three primary germ layers found in the initial phase of an embryo. The endoderm is the innermost layer. The cells going inwards along the archenteron produce the inner layer of the gastrula that forms into endoderm.

4. The correct answer is 3. The blastopore in a deuterostome develops into the animal's anus.

5. The correct answer is 2. A zygote refers to an amalgamation of a sperm cell and the egg cell. It is also called fertilized ovum, the zygote starts as a single cell, and however, it differentiates briskly in the days after fertilization.

pashok25 [27]2 years ago

3 0

3.c
4.c
5.b
I just took the test

You might be interested in

Hurrry!!! No BS

kotykmax [81]

Answer:

fine

Explanation:

bull poop

4 0

2 years ago

Read 2 more answers

Which statement best describes the composition and function of proteins in organisms? A) long chains of hydrocarbons used for di

Natasha_Volkova [10]

D) long chains of amino acids used for building, repair and maintenance

4 0

3 years ago

What type of fiber-cable problem is caused when pairing a 50-micron core cable with a 62.5-micron core cable?

irakobra [83]

A 50-micron core cable and a 62.5-micron core cable paired together will result in a fiber type mismatch issue.

<h3>Can you measure length in microns?</h3>

Micrometres, sometimes referred to as microns, are units of length in the metric system equal to 0.001 millimeters, or around 0.000039 inch. Its symbol is m. The micrometer is frequently used to gauge the size of minute things, such as bacteria.

<h3>1 or 5 microns—which is larger?</h3>

The micron number should be as low as possible. Imagine a sieve for microns. The tiny particles will all flow through a 5 micron water filter and into your drinking water, while the larger ones will be sieved out by the filter. A filter with a 1 micron pore size will, in contrast, filter out invisible particles.

To know more about Microns visit:

brainly.com/question/28965352

#SPJ4

7 0

1 year ago

In cross-fostering studies, the young of one species are placed in the care of adults from another species. in broad terms, what

Bess [88]

These sorts of studies can help researchers determine the relative importance of nurture and nature in determining a trait. Nature here would refer to genetics passed down to an individual from its parents, whereas nurture refers to the environment the individual is exposed to.

4 0

3 years ago

The population in South Africa is more prone to sickle cell anemia (genotype "ss"). People with genotype "ss" survive only up to

lions [1.4K]

The answer is stabilizing selection.

<span>Sickle-cell anemia is a recessive disorder caused by the presence of two recessive alleles "s", so genotype is "ss". This disorder is characterized by sickle hemoglobin. In an area with malaria, heterozygous individuals "Ss" (with one dominant allele and one recessive allele) have an advantage. These individuals will have both normal and sickle hemoglobin. But pathogen that causes malaria affect only normal hemoglobin, so heterozygous individuals will have half of the hemoglobin resistant to the pathogen and those individuals are resistant to malaria.</span>

Stabilizing selection favors heterozygotes Ss, disruptive selection favors dominant (SS) and recessive (ss) homozygotes, while directional selection favors dominant (SS) or recessive (ss) homozygote. Since in this example, people with genotype Ss (heterozygotes) are in advantage, then this is an example of stabilizing selection.

7 0

3 years ago