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USPshnik [31]
3 years ago
10

Select the correct answer from each drop-down menu. Sickle cell disease is passed on from parent to offspring. Sickle cell disea

se is an disease. Some carriers of the disease exhibit increased resistance to malarial parasites. This resistance is a mutation
Biology
1 answer:
allsm [11]3 years ago
5 0

Answer: All the statements of the question are correct.

Sickle cell disease is an autosomal recessive disorder that is characterized by formation of defective hemoglobin protein, which results in sickle shaped RBC ( red blood cell).

This disease is caused by mutation in the gene that is responsible for the protein hemoglobin ( which transport oxygen throughout body).

It is inherited by the offspring when both the mutated copy of genes ( one from each parent) are passed to him.

Carriers of the disease exhibit increased resistance to malarial parasites by controlling the level of free haem in the blood ( through enzyme heme oxygenase that produces a toxic carbon monoxide gas). The resistance thus developed, is a mutation.

Therefore, all the statements in the given question are correct.

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A population of mice has black or brown hair. The gene for black hair color (B) is dominant over brown (b). If 16% of the mice a
gayaneshka [121]
Answer

if B and b are the two alleles , B + b = 1 and B ^2 +2 Bb + b ^2 
= 1. If 16% of mice are homozygous black , B ^ 2 =0 .16, meaning B = 0 .4 and b = 1 - 0. 

hope this helps

IN exchange can u mark me as brainlist
7 0
3 years ago
In the SDS-PAGE (sodium dodecylsulfate - polyacrylamide gel electrophoresis) method, separation takes place on the basis of:____
Vera_Pavlovna [14]

Answer:

B

Explanation:

Sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) is a method of separating molecules based on the difference of their molecular weight.

8 0
3 years ago
The marketing environment is best described as being a. slow, with infrequent fluctuations. b. composed of variables independent
Marta_Voda [28]

d. dynamic and changing

Explanation:

The marketing environment is best described as being dynamic and changing.

Marketing is a set of activities whereby a company promotes their products and services.

  • A marketing environment refers to all factors that ensures the producers serves their customers better.
  • There is no real static model to make predictions about the marketing environment.
  • Since it is targeted and centered on customers, the marketing environment is constantly changing and dynamic.

learn more:

Market economy brainly.com/question/10906918

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3 0
3 years ago
In guinea pigs the allele for black fur (B) is dominant over the allele for brown fur (b), and the allele for short fur (F) is d
galben [10]

Answer:

100%

Explanation:

This question involves two genes in guinea pigs; one coding for fur color and the other for fur length. The alleles of black fur (B) and short fur (F) is dominant over the alleles for brown fur (b) and long fur (f).

In a cross between two offsprings with genotypes: BBFF x bbff, the following gametes will be produced by each parent:

BBFF - BF, BF, BF, and BF

bbff - bf, bf, bf, bf

Using these gametes in a punnet square (see attached image), one will notice that all of the offsprings will have the genotype: BbFf i.e all or 100% of the offsprings are heterozygous for both of the genes or traits.

5 0
2 years ago
Explain living things such as people in trees and how they are different from nonliving things such as rocks and tents
Citrus2011 [14]

Answer:

The difference between living things and nonliving things is little things that we call is senses like sight, taste, touch, smell, and hearing. For example a human or animal can react to someone or something touching them. For a nonliving thing such as a rock can't react to someone touching them unless u force them to.

Explanation:

https://quizlet.com/120523212/characteristics-of-life-biology-identify-the-levels-of-organization-in-a-multicellular-organism-flash-cards/

6 0
3 years ago
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