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77julia77 [94]
3 years ago
13

What are two modes of genetic variation of organisms

Biology
1 answer:
Arada [10]3 years ago
7 0

The genetic variation of organisms has three sources they are mutation, gene flow and sexual reproduction.

Explanation:

Genetic variation are caused by mutation , random mating, random fertilization and recombination between homologous chromosomes during meiosis.

It is a variation in alleles and genes, among the populations. There is a genetic variation within the family of closely- related individuals. If it is a neighborhood there are many families and there is also genetic variation among that group.

An exact genetic copy of the parent organism is produced in asexual reproduction. It only introduces the genetic variation into the population if a random mutation in the organism's DNA is passed on to the offspring.

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Which of the following is NOT a function of a glycocalyx?
Furkat [3]

Answer:

  The incorrect assertive is letter C. it forms pseudopodia for mobility.

Explanation:

  The glycocalyx or glycocalyx is a wrapper outside the plasma membrane present in animal cells and some protozoa. The term glycocalix derives from the Greek glykys, sugar, and the Latin calyx, bark, a sugar peel. It consists of lipid-associated carobhydrates, commonly called glycolipids, and protein-associated caroboidates, called glycoproteins.

  According of all functions we have about glicocalix, the assertive letter C is the only is not a function about this structure. The other ones, like allows bacteria to stick to a host or the environment, biofilm formation and protection a bacteria about the drying out process are function of the glycocalix.

8 0
3 years ago
Part A: If one follows 70 primary oocytes in an animal through their various stages of oogenesis, how many secondary oocytes wou
olga nikolaevna [1]

Answer:

<u>Part A</u> : 70 secondary oocytes will be formed.

<u>Part B</u> : 70 first polar bodies will be formed.

<u>Part C</u> : 70 ootids will be formed.

Explanation:

During oogenesis growth maturation of a single oogonium produces one primary oogonium.

the primary oogonium then undergoes meiosis -1 and produces  one secondary oocyte and first polar body.

The secondary oocyte then undergoes meiosis - 2 and forms an ootid and second polar body.

The ootid then differentiates into the ovum.

As in the above scenario , 70 primary oocytes are present , they undergo meiosis-1 and produces 70 secondary oocytes and 70 first polar bodies. Hence answers of part A and B is 70.

As 70 secondary oocytes are formed , they undergo meiosis -2 and forms 70 ootids which then differentiate in 70 ovums.

8 0
3 years ago
Why is it important for scientists to share results with others working in their field?
kap26 [50]
When they compare they can see the difference and similarities to get to the end result
5 0
3 years ago
Which of the following is found in both an animal cell and a plant cell? 1. Lysosome 2. Cell membrane 3. Chloroplast 4. Cell wal
dexar [7]

The answer would be 1.lysosome

5 0
3 years ago
Which system's main purpose is to allow organisms to create more<br> organisms? *
aksik [14]

Answer:

Reproduction

Explanation:

Reproduction is the process which allows organisms to create more organisms.

hope it helps!

4 0
3 years ago
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