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Hunter-Best [27]
3 years ago
11

_adds genetic variation,which is essential for evolution

Biology
1 answer:
olga nikolaevna [1]3 years ago
4 0

Answer:

mutation

Explanation:

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T or F : for a group of organisms of the same species to be considered a population, they must live in the same area
jekas [21]

Answer:

True

Explanation:

A group of organisms of the same species, living in the same area at the same time.

3 0
3 years ago
Gregor Mendel observed that two plants with purple flowers could produce some offspring with white flowers and some offspring wi
podryga [215]

Answer:

Heterozygosity

Explanation:

The correct term that could explain the phenomenon is heterozygosity.

<u>In heterozygous condition, a gene is made up of two different alleles in which one would be dominant and the other would be recessive. </u>

<em>In heterozygous purple plants in which the alternate color is white, the white color is not expressed because its allele is in a recessive state. If two heterozygous plants are mated, the recessive allele in each plant would combine into some of the offspring, resulting in the production of white color progeny in addition to the dominant purple color progeny.</em>

Let us assume that the purple color allele is P and the white color is p.

   Pp    x    Pp

 PP  Pp  Pp  pp

PP and Pp - purple color

pp - white color.

4 0
3 years ago
.
4vir4ik [10]

Answer:

Explanation:FIRST YOU KNOW THAT ANGIOSPERMS HAVE FLOWERS NOT CONES

AND HEY CONTAING REPRODUCTIVE ORGANS IN THE FLOWER

6 0
4 years ago
How did mike culbreath get the bacterial infection
Nesterboy [21]
Answer: It turns out that Culbreath was infected with a common germ called campylobacter, which victims usually contract by eating infected chicken. But this particular strain of campylobacter was anything but the common germ people usually encounter. It had become resistant to Cipro.

Hope this helps :)
3 0
3 years ago
The cellular mechanism that determines the independent assortment of maternal and paternal chromosomes is: Please choose the cor
Ipatiy [6.2K]

Answer:

separation of homologous pairs at anaphase I of meiosis.

Explanation:

Independent assortment law establishes that the alleles from two or more different genes distribute in gametes independently from each other. In other words, a gamete receives an allele from a gene that does not depend or influence the allele of another gene in the same gamete. This random distribution can only be applied to independent genes. These genes segregate independently after crossing over because they are located far away from each other.  

When cell division is going on by meiosis, it involves the random and independent segregation of the alleles. During anaphase I (meiosis), the pairs of homologous chromosomes separate independently of each other. Each integrant of the homologous pair migrates to opposite poles of the cell. This separation generates different chromosomal combinations in the daughter cells. The process is as follows.    

During metaphase I, homologous pairs together migrate to the equatorial plane, where they randomly aline with their kinetochores facing opposite poles. The random arrangement of tetrads is different in every cell going through the meiosis process. There is no equal alinement between two cells. When tetrads aline in the equatorial plane, there is no predetermined order for each of the homologous chromosomes of each tetrad to face one of the poles and then migrate to it while separating. Any chromosome of the homologous pair might face any of the poles and then migrate to it. Each of the chromosomes has two possibilities for orientation at the plane. During anaphase I, each of the homologous chromosomes migrate to the corresponding pole. When the new haploid cells are formed, the number of variations in each cell is also different and depends on the chromosomes that form that cell. This random order in the equatorial plane is what introduces variation into the gametes. It is almost impossible that two gametes resulting from meiosis will get the same genetic charge.

6 0
3 years ago
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