All categories

3 years ago

Why is blood type AB+ considered the universal receiver?

Biology

2 answers:

jasenka [17]3 years ago

5 0

Answer:

the first one: It has no antibodies that can attack the antigens on the red blood cells of the other blood types.

Explanation:

edge 2021

Alja [10]3 years ago

4 0

Answer:

A) it has no antigen that can attack..

Explanation:

Mark brainliest

You might be interested in

If all of the offspring have roan coats—white hairs mixed into a base coat of red—what can be said about the red and white allel

madam [21]

Answer:

The alleles for red and white coat color are co-dominant.

Explanation:

Co-dominance is the condition when none of the allele of a gene is dominant. The heterozygous genotype exhibits traits of both alleles.

In the given example, the offspring have roan coat color in which white hairs are mixed into a base coat of red. Since both the alleles are expressed in heterozygous offspring, the alleles for red and white coat colors are co-dominant over each other.

4 0

3 years ago

Which of the following elements is known as "nuclear ash" when it forms inside a star?

vovangra [49]

Answer:

D- Iron

~+lil more info!+~

Iron is the ultimate nuclear “ash,” from which no nuclear energy can be extracted.

8 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

The viral pathogen that causes cold sores can remain inactive in the body for a long time between disease outbreaks. How is this

Serhud [2]

This disease is classified as a latent disease.

<h3>Classification of diseases</h3>

Latent disease is a classification of disease whereby the infectious agent remains inert in the body of its host between episodes of recurrent diseases.

Examples of viral pathogens that causes latent diseases include:

Herpes simplex,

Varicella zoster,

Epstein-Barr,

Human cytomegalovirus,

Adenovirus, and Kaposi's sarcoma.

The infection caused by the listed viral pathogens exhibit a latent disease phase whereby there is no noticeable symptoms of infection.

Learn more about latent disease here:

brainly.com/question/26971909

3 0

3 years ago

Why do producers remove carbon from the atmosphere?

ira [324]

The correct answer is b, photosynthesis.

3 0

3 years ago