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3 years ago

Diffusion by which mechanism occurs more rapidly in metal alloys?

1 answer:

5 0

Interstitial diffusion occurs more rapidly in metal alloys because these atoms are smaller, and therefore they are more able to move and vibrate as compared to atoms that are larger and less able to migrate.

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The processing of mRNA into a protein strand is known as?

egoroff_w [7]

It should be translation.

6 0

3 years ago

A newly discovered gene has two aleles a and a scientists hypothesize that the alleles show incomplete dominance

tatiyna

If scientists believe that the newly discovered gene has two alleles A and a and that the alleles show incomplete dominance, the best way to prove this is to look for subjects who are homozygous with respect to the different alleles. The offsprings will all have the genotype of Aa and if indeed, the alleles show incomplete the dominance, the traits of the first generation will not manifest completely but a mixture of two will.

4 0

3 years ago

22. A plant geneticist is investigating the inheritance of genes for bitter taste (Su) and explosive rind (e) in watermelon (Cit

mylen [45]

Answer:

See the answer below

Explanation:

Using the formula for calculating Chi square ( $X^2$ ):

$X^2$ = $\frac{(O - E)^2}{E}$ where O = observed frequency and E = expected frequency.

The observed frequencies for the four phenotypes are 88, 62, 62, and 81 respectively.

For the expected frequency, the phenotypes are supposed to assort in 9:3:3:1 according to Mendel ratio.

Hence, expected frequencies are calculated as:

phenotype (1) = 9/16 x 293 = 164.81

phenotype (2) = 3/16 x 293 = 54.94

phenotype (3) = 3/16 x 293 = 54.94

phenotype (4) = 1/16 x 293 = 18.31

The $X^2$ is calculated thus:

Phenotype O E $X^2$

1 88 164.81 $\frac{(88 - 164.81)^2}{164.81}$ = 35.80

2 62 54.94 $\frac{(62 - 54.94)^2}{54.94}$ = 0.91

3 62 54.94 $\frac{(62 - 54.94)^2}{54.94}$ = 0.91

4 81 18.31 $\frac{(81 - 18.31)^2}{18.31}$ = 214.64

Total $X^2$ = 35.80 + 0.91 + 0.91 + 214.64 = 252.26

To the nearest tenth = 252

Degree of freedom = n - 1 = 4- 1 = 3

$X^2$ tabulated = 7.815

The calculated  $X^2$  exceeds the critical value, hence, the null hypothesis is rejected. The two genes did not assort independently. 

4 0

3 years ago

Hi!:) can you please complete this for me? i’m a little confused.:)

Leya [2.2K]

1. The sun

2. Chemical energy

3. Photosynthesis

4. Store

5. release

6. Cellular respiration?

Last one I'm not 100% sure.

8 0

3 years ago

The evolutionary theory that suggests that a species can suddenly and rapidly evolve into a new species is ?

Mekhanik [1.2K]

Punctuated Equilibrium/ Equilibria proposes that once species appear in the fossil record, the population will be in the state of little or absent morphologic change. This is called a state of stasis. The theory further proposes that the population is confined to infrequent and geographical rapid events when significant evolutionary change happens. The parent species will the split into two distinct species. This process if called cladogenesis.

6 0

3 years ago