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rodikova [14]
4 years ago
7

In many animals, height is an example of a polygenic trait. Which types of natural selection can affect polygenic traits? I. dir

ectional selection II. disruptive selection III. stabilizing selection
Biology
1 answer:
Marat540 [252]4 years ago
7 0

The question is incomplete as it does not have the options which are:

I. only

I. and II. only

II. and III. only

I, II, and III.

Answer:

I, II, and III.

Explanation:

The mechanism of natural selection can be explained for the trait which is determined by one gene but the traits which can be determined by more than one gene like height (polygenic trait), the selection becomes very complex.

The natural selection can be explained by the phenotype produced in a population and that depends on the genes.  The polygenic trait shows the variation in the population, therefore, it is impossible to predict only one mechanism and therefore all types of natural selection occurs on a population.

Thus,  I, II, and III are correct.

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Can you tell us about inorganic components?​
natka813 [3]

Answer:Inorganic compound, any substance in which two or more chemical elements (usually other than carbon) are combined, nearly always in definite proportions. Compounds of carbon are classified as organic when carbon is bound to hydrogen.

Explanation:

3 0
3 years ago
PLZ HELP with this one!
Aleks04 [339]

Answer:

b) 50kg

Explanation:

You simply use F=ma equation, newtons second law

We are given: F=500N     a=10m/s^2    m=?

1) lets change F=ma to help us find the m, we divide both sides with the a so we get \frac{F}{a} =m

2) plug in the F and the a, \frac{500N}{10m/s^2} =m, where \frac{N}{m/s^2} =kg

3) plug it in ur calculator and you should get 50kg

hope this helped :)

7 0
4 years ago
A population of 100 rats was analyzed for their genotype at the isocitrate dehydrogenase locus. There are two alleles (R and S)
goldfiish [28.3K]

Answer:

Yes, this population lies in Hardy-Weinberg equilibrium as it follows both the principles of Hardy-Weinberg.

Explanation:

Here ,

f(A)= p=0.575

f(B)= q=0.425

As per the first principle of hardy Weinberg, the sum of all the alleles at the locus must be equal to 1.

Thus,

p+q=1\\0.575+0.425 = 1\\1=1\\

Also, as per the second equation of Hardy Weinberg's equation-

p^{2} + q^{2} +2pq =1

(0.575)^2+2(0.575)(0.425)+(0.425)^2=1\\0.3306+ 0.48875+ 0.180625=1\\1=1\\

Hence, this population lies in Hardy-Weinberg equilibrium as it follows both the principles of Hardy-Weinberg

8 0
4 years ago
Eukaryotic chromosomes contain two general domains that relate to the degree of chromatin condensation. These two regions are _
GuDViN [60]

Answer:

This question lacks options, options are: A) Heterochromatin and euchromatin

B) Uniform in the genetic information they contain

C) Separated by large sketches of repetitive DNA

D) Each void of typical protein-coding sequences of DNA

E) Void of introns.  

The correct answer is A.

Explanation:

The chromatin or substance that makes up the nuclei of cells and that results from the interaction of DNA with histonic and non-histonic proteins and RNA; it can present different degrees of packing or contraction. When chromosomes are stained with chemicals that bind to DNA, densely stained regions and less densely stained regions appear. Heterochromatin are segments of the chromosome that stain strongly and remain visible, practically, during the entire cell cycle. There are few genes in these regions and therefore low transcriptional activity. They are supercondensed regions. Euchromatin are segments of the chromosome that are not visible during telophase and interphase, only in metaphase. It corresponds to regions that are less compact and in which there is a higher gene density.

3 0
3 years ago
Define meteorology and discuss the origin of the word.
Elis [28]

Answer:

Definition- Meteorology is a type of atmospheric science which mainly focuses on forecasting weather.

Origin- The word meteorology is from the Ancient Greek metéōros (meteor) and logia, meaning "the study of things high in the air."

hope this helps!

7 0
3 years ago
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