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PolarNik [594]
2 years ago
8

What best summarizes the differences between ancient and modern horses?

Biology
1 answer:
SashulF [63]2 years ago
4 0
An ancient horse was used for labor and was made for carrying heavy loads of water horses are now built with more muscle in their legs
You might be interested in
2. How might a mutation that causes a single letter change in the DNA sequence affect
charle [14.2K]

Answer:

A mutation that causes a single letter change in the DNA sequence can affect your protein structure and function because the sequence of letters in a gene determines the sequence of amino acids in the protein that it encodes. A single letter change in the DNA alters the mRNA which alters the amino acid sequence of the resulting protein and sometimes that can cause serious results if it changes the way a protein works.

ex. sickle cell disease - a single letter swap in the gene that encodes the hemoglobin molecule results in deformed red blood cells

Hope that helps.

8 0
3 years ago
A prospective groom, who is healthy, has a sister with cystic fibrosis (CF), an autosomal recessive disease. Their parents are n
son4ous [18]

Answer:

Explanation:

From the given information:

Since the parent are normal; Let assume that their trait is Pp

The affected sister  will be recessive in nature, so the trait will be pp

Now, the husband who is the groom will be a carrier with a probability of 2/3 since her sister is affected.

Also, the wife will be carrying a heterozygous trait since she is normal as well.

However, using Hardy-Weinberg assumption:

q^2 = \dfrac{1}{2500}= 0.0004

q = \sqrt{0.0004}

q = 0.02

Recall that:

p+q =1 \\ p = 1 - q \\p = 1 - 0.02 \\p = 0.98\\

Thus, p^2 = (0.98)^2

p^2 = 0.9604

2pq = 2 \times 0.98 \times 0.022

2pq = 0.0392

Finally, the required probability that there will be an affected offspring amongst the family is:

= \dfrac{1}{4} \times \dfrac{2}{3} \times 0.0392

= \dfrac{1}{153}

3 0
3 years ago
In 3–5 sentences, compare and contrast the flow of matter and energy in each
trapecia [35]

Answer:There is a fundamental difference in the way energy and matter flows through an ecosystem.Matter flows through the ecosystem in the form of the non-living nutrients essential to living organisms. When a living organism dies, nutrients are released back into the soil. These nutrients then are absorbed by plants, which are eaten by the herbivores. Matter, once again, is passed on. The herbivore is eaten by a carnivore (and matter is yet again transferred therein). Ultimately, when the carnivore dies, matter is returned back to the soil by the decomposers and the cycle repeats. So you see, matter is recycled in the ecosystem.Unlike matter, energy is not recycled through the system. A part of the energy is lost at each stage.

Explanation:

5 0
3 years ago
What type of anthropologist studies people from a perspective that considers how humans have adapted to their environments over
Elden [556K]

Answer:

Biological Anthropologist

Explanation:

Biological Anthropologist studies human evolution,  variation and adaptation in relation to changes in the environment

6 0
3 years ago
Write down the functions of<br> 1.microtubules<br> 2.tripletsof microtubules
DedPeter [7]

Answer:

Microtubules are filamentous intracellular structures that are responsible for various kinds of movements in all eukaryotic cells. Microtubules are involved in nucleic and cell division, organization of intracellular structure, and intracellular transport, as well as ciliary and flagellar motility

Centrioles are cylindrical structures that are made up of protein tubes called microtubules. Specifically, nine groups of three microtubules, known as triplet microtubules, are linked together to make the walls of the cylinder.

Hope it helps :)

5 0
3 years ago
Read 2 more answers
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