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NNADVOKAT [17]
3 years ago
5

What could be done to return the environment of the peppered moth to its original state?

Biology
2 answers:
padilas [110]3 years ago
8 0
Clean up the environment
nadya68 [22]3 years ago
3 0
Clean up the environment and remove factories from the area
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A hidden or masked allele; won't appear if dominate form is present
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Alleles that are masked by others are called recessive alleles.
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3 years ago
Describe both innate and acquired immune systems and the importance of vaccines.
lbvjy [14]

Answer:

Innate immunity is a non-specific immune system which provides defence against any pathogenic microorganism in early stages. It includes physical barrier such as skin, chemical barriers such as saliva, tears, et cetera, phagocytic cells such as macrophages, et cetera.

Acquired immune system is the one which develops after exposure to pathogen or antigen. It is highly specific in nature. It includes B-lymphocytes and T-lymphocytes. It includes the production of antibodies.

Vaccines are used to develop acquired immunity in people. The process is termed as vaccination or immunisation. Heat-killed or weakened pathogen or antigen is inserted into a person after which a person develops antibodies and memory cells against that pathogen or disease. So, the immune system acts more vigorously against that pathogen in secondary infection.

Thus, a person becomes immunised.

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3 years ago
A mom, heterozygous for type B blood, has a baby with type AB blood, what possible blood types could the baby's father have?
EastWind [94]

Answer:

A

AB

Explanation:

This question involves blood type, which can either be blood type A, B, AB or O in humans. Alleles A (iA) and B (iB) are co-dominant but dominant over allele O (i).

According to this question, a mom who is heterozygous for type B blood i.e. genotype iBi, has a baby with type AB blood. Since the mother contributed the "B" allele, it means that the father contributed the A allele. Only a father with genotype: iAi or iAiA (type A) or iAiB (type AB) can produce such allele.

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Starting with the basic building blocks, which is the correct order of levels of
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