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ivolga24 [154]
2 years ago
5

Explain how meiosis and fertilization can result in a trait like sickle cell being expressed in offspring when not expressed in

either parent.​
Biology
1 answer:
SpyIntel [72]2 years ago
4 0

Meiosis and fertilization can result in a trait like sickle cell being expressed in offspring because meiosis transfers genetic characteristics from parent to offspring.

<h3>How sickle disease transfers from parents to offspring?</h3>

Sickle disease is inherited when a child receives two sickle cell genes which is one from father and the other from mother. Meiosis and fertilization can result in a trait like sickle cell being expressed in offspring when not expressed in either parent because meiosis transfers genetic characteristics from parent to offspring.

Learn more about meiosis here: brainly.com/question/15475960

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Marfan syndrome is a dominant trait. A cross between a homozygous dominant and a heterozygote would produce what phenotypic rati
umka2103 [35]

Answer:

The correct answer is- 4:0

Explanation:

Marfan syndrome is a genetic problem which affects the connective tissue in the body. The trait for this disease is autosomal dominant which means even one abnormal copy of this gene in the offspring or individual is sufficient to cause this syndrome.

Let S is the allele that is dominant for this syndrome and s is recessive. So if a cross between homozygous dominant(SS) and heterozygous individual (Ss) occurs than all the offspring would have this syndrome.  

                                   S      s

                              S  SS   Ss

                              S  SS   Ss

Therefore all 4 offspring would have at least one dominant allele which is sufficient to cause this syndrome. So the phenotype ratio would be 4:0.

                       

3 0
3 years ago
Why do plants have a cell wall and animals cells don’t?
algol [13]
Cell walls are supporting structures that help the plant to have a fixed shape and protect it from injury. Other than that, it helps to keep the plant turgid so that it can stay firm and upright. Because when it enters a high water potential solution, as water moves in, the water exerts turgor pressure on the cell wall and the cell wall thus exerts an opposing pressure to keep water out. Hence cell wall is needed for the plant.

On the other hand, animal cells do not need to keep the structures, as they have the skeletal system to protect the organs and cushion them against any
external injuries.

I hope that helped
5 0
3 years ago
Read 2 more answers
Compare and contrast bioarchaeology and forensic anthropology. What are their similarities and differences? g
Rina8888 [55]

Answer:

Bioarchaeology is a discipline that studies human skeletal remains in an archaeological investigation; while forensic anthropology refers to the study of human skeletal remains in a criminal case  

Explanation:

Bioarchaeology is a discipline centered on the study of skeletal remains in order to obtain useful information about past societies/civilizations such as, for example, health conditions. On the other hand, forensic anthropology investigates human skeletal remains within a legal and/or criminal investigation. This information may result useful to identify a dead person, find the cause of death, and estimate time since death.

Similarities:

-Both disciplines have a strong biology background (especially in zoology)

-Both disciplines are focused on skeletal analysis

Differences:

-Bioarchaeology is associated with the anthropological study of human societies, while forensic anthropology associated with legal investigations

8 0
3 years ago
What are the features of Oligonucleotide Therapies Discovery?
NikAS [45]

Explanation:

For antisense gene therapy, chemically engineered oligonucleotides complementary to specific mRNA are inserted into the cells which stop the translation of the specific protein. Similarly, the antisense drug contains the vital molecule—“the noncoding mRNA”—which blocks the translation of a specific protein.

4 0
2 years ago
Ps.The answer is B,
VMariaS [17]

Answer  A

Explanation:

8 0
3 years ago
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