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
Allisa [31]
3 years ago
15

1. Your unique genetic identity comes from three different events; crossing over, random alignment, and random fertilization. Ex

plain what each of these are and how they lead to genetic diversity.
Biology
1 answer:
svetlana [45]3 years ago
5 0

Answer:

Crossing over and random alignment are the events of meiosis-I that add new gene combinations to the gametes. Random fusion of male and female gametes is called random fertilization.

Explanation:

During the pachytene stage of meiosis-I, part of the chromatids of each of the homologous chromosomes of a bivalent is broken apart and exchanged. This exchange of the genetic material between the members of a bivalent is called crossing over. The recombinant chromatids formed by crossing over have new allele combinations that were otherwise not present in the parental chromatids.

During metaphase I, the homologous pairs are aligned at the cell's equator in a random manner. This means that either the paternal or maternal chromosome of a pair may face one or the other pole of the cell. The arrangement of chromosomes during metaphase-I determines whether the paternal or maternal chromosome of each pair would be distributed to one or the other pole of the cell. This random segregation creates new gene combinations in gametes.

All the gametes have equal chances of getting fused with a gamete from the opposite gender. This is called random fertilization and further adds variations.

You might be interested in
Definition of congenital disease
Helen [10]

Answer:

the diseases that come at the time when they born are called congenital disease

Explanation:

mainly occur to babies

6 0
3 years ago
10. Which of the following statements best describes the major difference between anaphase of mitosis and anaphase I of meiosis?
umka2103 [35]
The answer will be A because mitosis usually separate the sister chromatids to sister chromosomes to form two diploid cells. In meiosis, the goal is to have four haploid cells. To form that, cells need to undergo cell division two times. In the case of meiosis I, sister chromatids stay joined together until it reaches meiosis II. Then, the sister chromatids will separate starting at anaphase II in meiosis II. For example, if you start with 92 chromosomes (46 chromatids) during meiosis I, at meiosis II you will have two cells with 46 chromosomes (23 chromatids). By the end of meiosis II, you should form 4 haploid cells that contains 23 chromosomes.
8 0
3 years ago
Can someone please Help me and dont delet it
jeka57 [31]

Answer:srry, i dont know the answer

4 0
3 years ago
Classify each nutrient as a macronutrient or as a micronutrient
levacccp [35]

Answer:

Macro: Phosphorous, Protein, Fat, Carbohydrates

Micro: Vitamin A, Sodium

Explanation:

Macronutrients are nutrients that are needed in large amounts. Micronutrients are needed in smaller amounts.

6 0
3 years ago
Which of the following lists the levels of organizational hierarchy from most complex to least complex?
vovikov84 [41]
The right choice of them is biosphere, community, and organism.
5 0
3 years ago
Read 2 more answers
Other questions:
  • What does the process of gene duplication and divergence refer to? (select all that apply)?
    5·1 answer
  • Please help me!!!!!! I will mark brainliest!!!!!!
    14·1 answer
  • In a water molecule, the Oxygen has a ____________ charge and the hydrogens have a ____________ charge.
    5·1 answer
  • What determines the traits of offspring
    11·2 answers
  • How has the study of mitosis affected scientists’ knowledge of cancer?
    8·2 answers
  • 1. What might cause an increase or decrease of carbon dioxide in a given location such as in the atmosphere or buried under grou
    5·1 answer
  • The Scientific Metho
    6·1 answer
  • What is the relative movement of the plate along San Andreas fault
    9·1 answer
  • Help me with this please
    12·1 answer
  • In T. adhaerens what type of cells are responsible for movement and what is the shape of these cells?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!