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Delicious77 [7]
2 years ago
5

Non-disjunction is the failure of homologous chromosomes to separate during meiosis I, or the failure of sister chromatids to se

parate during meiosis II or mitosis. As a result, both homologous chromosomes or both sister chromatids migrate to the same pole of the cell. This produces daughter cells with an imbalance of chromosomes. If 22 pairs of homologous chromosomes segregate normally during meiosis I in humans (n=23) but we have non-disjunction of 1 pair, then at the end of meiosis II we will have _________.
Biology
1 answer:
LenKa [72]2 years ago
3 0

Answer:

24

Explanation:

Meiosis is the reduction cell division that halves the number of chromosomes resulting in haploid daughter cells. Meiosis involves two subsequent successive cell division called meiosis I and II.

Nondisjunction occurs when homologous chromosomes fail to separate during anaphase I or sister chromatids fail to segregate and go into the same gamete. The result is the addition or loss of one or more chromosome. In humans, the gamete will have have 24 chromosomes.

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Humans and hogs have differences in only 1 out of the 51 amino acids in their insulin proteins. Hogs and guinea pigs have differ
balu736 [363]

Humans are more closely related to hogs than hogs are to guinea pigs.

Explanation:

The difference in the amino acid sequence of a protein is used to know the  relation between organism i.e. how closely they are related.

It is known that proteins are the result of DNA sequence ie genes of the organism.

The gene or protein is compared between organisms to understand the evolutionary evidence and similarities between them.

The less is the difference the more is the two organisms closely related as in the case of hog and human which have only 1 amino acid difference in their insulin enzyme. While guinea pig is having  a difference of 17 amino acids so it is expected to be distantly related.

These relations helps the scientist to resolve the issues of crisis say insulin. They zero out the possibility of extracting the enzyme genes of possible organism and increase the yield.

6 0
2 years ago
An iodine test of a tomato plant leaf revealed that starch was present at 5:00 p.m. on a sunny afternoon in July. When a similar
dimaraw [331]

This reduction in starch content occurred because starch was changed into simple sugars

<h3>Explanation: </h3>

Starch is a polymeric carbohydrate consist of many glucose units linked by glycosidic bonds. The iodine test is used to test for the presence of starch. Starch will change color to an intense "blue-black" colour after the addition of aqueous solutions of the triiodide anion. To do it we can add Iodine-KI reagent to a solution or directly on a potato or other materials such as bread, crackers, or flour The reaction between amylose that present in lesser amounts and iodine is said to account for the intense color change seen.

An iodine test of a tomato plant leaf revealed that starch was present at 5:00 p.m. on a sunny afternoon in July. When a similar leaf from the same tomato plant was tested with iodine at 6:00 am the next morning, the test indicates that less starch was present in this leaf than in the leaf tested the day before. This reduction in starch content occurred because starch was

  • 1. changed directly into proteins
  • 2. transported out of the leaves through the guard cells
  • 3. transported downward toward the roots through tubes
  • 4. changed into simple sugars

Learn more about   starch brainly.com/question/12497961

#LearnWithBrainly

3 0
2 years ago
Read 2 more answers
what types of minerals are good conductors of electricity, are strong and can be formed into various shaped and sized products w
Sidana [21]

Minerals which are good conductors of electricity are described below.

Explanation:

  • metals tend to be highly efficient conductors of heat and electricity. The vast majority of elements on the periodic table are metals, and most of these fall into one of five families: alkali metals; alkaline earth metals; the very large transition metals family; and the inner transition metal families, known as the lanthanides and actinides.
  • Metals are lustrous or shiny in appearance, and malleable or ductile, meaning that they can be molded into different shapes without breaking. Despite their ductility, metals are extremely durable and have high melting and boiling points. They are excellent conductors of heat and electricity, and tend to form positive ions by losing electrons.
5 0
2 years ago
baby chickens, like all baby birds, require a constant source of food. As chickens grow, more energy is required for daily activ
iren2701 [21]

Amount of food eaten depends on the chicken size aka chicken size

8 0
2 years ago
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In a phospholipid bilayer, the __________.a. phosphate groups are hydrophobic. b. fatty acid tails are ionized. c. fatty acid ta
den301095 [7]

Answer:

Option-E

Explanation:

The phospholipid bilayer is the layer which forms the outer membrane of the cell.

The phospholipid layer is amphipathic as it contains both the hydrophilic and hydrophobic portions.

The phospholipid is composed of the glycerol attached to phosphate groups which form head or hydrophilic region and the 3 fatty acid tails which form the hydrophobic portion.

The head or hydrophilic portion is arranged in the layer facing the outer external portions and the inside of the cytoplasm as the lipid layer exist in the bilayer.

Thus, Option-E is correct.

4 0
2 years ago
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