1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
dem82 [27]
3 years ago
9

Will give Brainliest, need help!

Biology
1 answer:
motikmotik3 years ago
6 0
I Think The answer is b I hope it helps
You might be interested in
All of the following are periods off prenatal developments except
qwelly [4]

Explanation:

1. All of the following are periods of prenatal development except:       a.germinal

b.embryonic

c.fetal

<u>d.postpartum</u>

Prenatal development describes the 40 week period before a child’s birth and the processes that occur during that time during prenatal development. Cells containing genetic material called chromosomes determine all physical characteristics of an organism including biological sex, height  and eye color through expression of genes.

  • The germinal stage describes the process from conception through implantation which is approximately two weeks, and begins when an egg is fertilized by sperm to form a zygote.
  • The embryonic stage follows this until week eight of pregnancy; here the zygote divides into multiple cells in layers that determine systems like the nervous system; skeleton and respiratory system. The embryo travels through the fallopian tubes and implants itself in the lining of the uterus where blood vessels form the placenta.
  • During the fetal stage spanning from week 9 until birth,  differentiation,  formation of sex organs internal organs and sensory perception occurs. The fetus also undergoes major brain development to form psychological and psychosocial traits. Immediately following the birth of the fetus is called the postnatal period

Learn more about embryonic development at brainly.com/question/6393374

Learn more about the prenatal period at brainly.com/question/4481556

#LearnWithBrainly

5 0
3 years ago
In a a person is assigned a status at birth and remains at that level throughout life.
alex41 [277]

Answer:

When a person is assigned a status at birth and must remain in it throughout his or her life, it is a caste system.

Explanation:

A caste system is applied in some societies and consists of the assignment of an individual to a social stratum by birthright, being forced to remain in that status and even relate to people of the same social category and allow endogamy.

It is a system that exists in ancient societies, an example being the Hindu caste system or South African apartheid. Other cultures that made use of the caste system were the Arab and Hebrew.

Unlike the caste system, the class system consists of inclusion in a specific social class, without the intervention of the birthright.

Learn more:

Caste system brainly.com/question/108900

7 0
3 years ago
What is the exchange of alleles between homologous chromosomes during meiosis as a result of crossing over
Zanzabum
Crossing over<span> occurs </span>between<span> prophase 1 and metaphase 1 and is the process where </span>homologous chromosomes<span> pair up with each other and </span>exchange<span> different segments of their genetic material to form recombinant </span>chromosomes<span>. It can also happen </span>during<span> mitotic division, which may </span>result<span> in loss of heterozygosity. </span>
7 0
3 years ago
What is the haploid chromosome number in humans?
Vitek1552 [10]
Haploid chromosome number in humans is 23

In short, Your Answer would be 23

Hope this helps!
7 0
3 years ago
Which example best describes the term carrying capacity? A. The amount of space available for prairie dogs in a given area B. Th
lesantik [10]

Answer:

c please mark brainliest

Explanation:

3 0
3 years ago
Other questions:
  • Which of the following is not a negative factor of nonnative species?
    12·1 answer
  • Many organisms in the ocean live at depths of water not able to receive sunlight. Since the main marine food web is based on the
    9·1 answer
  • If you are growing a culture of bacteria (150ml) in the incubator, (a) what size flask should you use, and (b) should you cap th
    15·1 answer
  • Which of the following correctly describes the components of DNA?
    13·1 answer
  • When neurons are not producing electrical signals
    9·1 answer
  • Nutrients from digested food enter the blood stream through the process of
    13·1 answer
  • Emma is having a tea party with her stuffed animals and dolls, and pretends that they love the tea and cookies she prepared. Emm
    9·1 answer
  • Compare an animal with a gastrovascular cavity to an animal with a tube-type digestive system. What is(are) the major advantage(
    12·1 answer
  • QUICK!!!!! 100 points
    5·2 answers
  • What specialized structures does crayfish have that make it well suited to its environment​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!