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IRISSAK [1]
3 years ago
15

Almost all the South American and Central American

Biology
1 answer:
Vedmedyk [2.9K]3 years ago
8 0

Answer:

O founder's effect

Explanation:

A founder effect can be defined as the loss of genetic variation when a new population is established from a few individuals. This process is known to increase the frequency of particular gene variants (alleles) at different <em>loci</em> when they are selectively neutral (or nearly neutral), and thereby such genes are fixed by genetic drift (i.e., through the random sampling of founder individuals). Interestingly, it has been discovered that the majority of South American and Central American Indians are nearly exclusively in the O blood group, which has been further associated with random genetic drift and a founder effect.

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True or False: As discussed in lecture, we use a different assay for each different protein that we purify (For instance, the as
ra1l [238]

The given question is incomplete.The complete question is T/F When performing column chromatography to purify a protein of interest, one needs an assay to identify which fractions that contain the protein of interest. True or False: As discussed in lecture, we use a different assay for each different protein that we purify (For instance, the assay for protein A will be different than the assay for protein B which will be different than the assay for protein C, etc).

Answer: True

Explanation:

The sample contains different types of proteins in it and when the sample into chromatography column.

Different proteins have different affinity and based on the molecular size and weight they are separated.

So, according to the question if some one wants to assay protein A, it will be different for the protein B and different for the assay of protein C. This means that assays for different proteins will be different.

Hence, the given statement is True.

4 0
3 years ago
What is the major difference between bacterial chromosomes and eukaryotic chromosomes?.
Grace [21]

<u>The major </u><u>difference</u><u> between bacterial chromosomes and eukaryotic chromosomes is </u><u>Bacteria </u><u>have a single circular </u><u>chromosome </u><u>whereas eukaryotes have several linear chromosomes.</u>

What is a bacterial chromosome called?

Bacterial chromosome is called nucleoid. It is an irregularly shaped and contains genetic material. It is also called as genophore.

What is meant by eukaryotic chromosome?

  • Eukaryotic chromosomes are found in the cell's nucleus.
  • The DNA inside the nucleus is organized into chromosomes. At the most basic level, a chromosome is a molecule of DNA that is tightly coiled around proteins called histones.

What is the difference between bacterial and human chromosome?

  • Bacterial chromosomes are circular in contrast to human chromosomes, which are linear.
  • Furthermore, bacterial circular chromosomes are found in the nucleoid area rather than the nucleus, an organelle that is membrane-bound.

Learn more about bacterial chromosome

brainly.com/question/1213982

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4 0
1 year ago
How are the 3 stages of cell division similar to how new animals are created?
Vera_Pavlovna [14]

Answer:

Cell divison is defined as the process in which a parent cell split into two or more daughter cells. There are three stages of cell division that includes interphase, mitosis/meiosis and cytokinesis.

In the interphase the proteins, enzymes and cell organelles are formed and at the end of this phase single strand chromosome becomes a double strand carrying genes.

In the meiosis (in sexual reproduction) or mitosis (asexual reproduction) phase, divison of nucleus takes place. Meiosis gives rise to geneticaly different cells due to crossing over while mitosis leads to  identical cells .

Cytokinesis occurs cocurrently after meiosis or mitosis in which cytoplasm of a parental cell divides into two daughter cells each with identical chromatin.

Creation of new animals are also undergo these 3 stages of cell division that is interphase, meiosis (eukaryotes)/mitosis (prokaryotes) and cytokinesis. Majority of animals (eukaryotes) undergo meiosis phase because their mode of reproduction sexual and have genetic variation due to crossing over of chromosomes and produces 4 daughter cells at the end cell division.

Hence, the 3 stages of cell division is similar to craetion of new animals.

5 0
3 years ago
Phenylketonuria (PKU) is a recessive genetic disorder. If both parents are carriers, what is the probability of this couple havi
wel

Answer: 25%

Explanation: if you do the Punnett Square method then you would see that both parents would have been Dominant  for the trait, so there is a 50% chance of  the offspring to be a carrier, 25% chance of the offspring to have PKU and 25% chance for it to ave  

6 0
3 years ago
PLEASE HELP ASAP I'LL GIVE BRAINLIEST!!
rusak2 [61]

Answer:

Picture number one: Blank one=E Blank two=A

Picture number two: Answer=A

Explanation:

4 0
2 years ago
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