How did Mendel make the F1 generation plants

In a species of birds, having wide wings (W) is dominant to having thin wings (w). Which of the following genotypes is INCORRECT

Nadusha1986 [10]

Answer:

The options including the genotypes are not included. On a general note, three genotypes that are possible for this trait including their phenotype is:

WW- Wide wings

Ww- Wide wings

ww- thin wings

Explanation:

This question involves a single gene coding for wings width in a certain bird. The allele for wide wings (W) is dominant over the allele for thin wings (w). This means that allele 'W' will always mask the expression of allele 'w' in a heterozygous state.

There are three possible genotypes considering this trait.

WW- homozygous dominant genotype which wings will be phenotypically wide because it contains a combination of same dominant alleles.

Ww- heterozygous dominant genotype which wings will be phenotypically wide because I this combination of alleles, the W allele will always express itself phenotypically over allele 'w' considering the dominance of W.

ww- homozygous recessive genotype which wings will be phenotype thin because it contains a combination of same recessive alleles.

N.B: a recessive trait will only be expressed in a homozygous condition.

4 0

4 years ago

A researcher is studying a newly discovered gene that causes increased body weight in domesticated chickens. In a mainland popul

Dima020 [189]

Answer:

0.382

Explanation:

In solving this, let's recall the Hardy-Weinberge's equations which are as follows: p + q = 1; $p^{2} + 2pq + q^{2} = 1$ , where p represents the dominant Allele, while q represents the recessive allele. In applying this to what we want to calculate, $p^{2} = A1A1$ , 2pq = A1A2, and $q^{2} = A2A2$ .

Using the Hardy-Weinberge's equations, we can determine the number of individuals having the different types of genotype inherent in the 100 mainland chicken that was transported.

Since p + q = 1, i.e. given that allele frequency of A1 is 0.2, therefore allele frequency for A2 = 0.8 (p + q = 1).

Using $p^{2} + 2pq + q^{2} = 1$ , we would have the following:

$p^{2} = A1A1 = 0.2^{2} = 0.04$

$2pq = A1A2 = 2(0.2*0.8) = 0.32$

$qx^{2} = A2A2 = 0.8^{2} = 0.64$

Therefore, number of mainland chickens with the A1A1 genotype = 0.04*100 = 4; A1A2 = 0.32*100 = 32; A2A2 =0.64*100 = 64

The genotype frequencies for the admixed population would be the sum of that of the transported mainland chicken and that of the isolated chicken, which would be:

Genotype mainland isolated Total No of A1 allele present

A1A1 4 200 204 204

A1A2 32 400 432 216

A2A2 64 400 464 0

Total 1100 420

Therefore, allele frequency of the A1 allele in the admixed population = 420/1100 = 0.382

4 0

3 years ago

What are stacks of thylakoids are called?

ANTONII [103]

They re called granum singular and grana plural

3 0

3 years ago

Read 2 more answers

what percentage is the tonicity of the medically administered intravenous solutions? what would happen if the tonicity gets lowe

Sunny_sXe [5.5K]

Answer:

<h2>The Infusion Nurses Society (INS) classifies a solution as isotonic if its tonicity falls within (or near) the normal range for blood serum-between 280 and 300 mOsm/liter. A hypotonic solution has an osmolarity less than 280 mOsm/liter, and a hypertonic solution has an osmolarity greater than 300 mOsm/liter.</h2>

<h2>Hopefully u will satisfy with my answer..!!</h2>

<h2>Have a nice day ahead dear..!!</h2>

3 0

3 years ago

8. A plant in a small town closes, leaving hundreds of people unemployed. There are jobs

galben [10]

Answer:

The correct option is B. An economist might use this example to <u>define resource immobility.</u>

Explanation:

Resource immobility can be described as a resource that happens to be of no competitive advantage. The resource is easy to obtain but competitors do not consider using it.

For example, in the scenario discussed in the question above, a similar plant is available in another city but the unemployed people do not want to avail that facility. The workers might compete for working in the closed plant but there is no such competition to work in the plant that is out of state.

4 0

3 years ago