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Sergio039 [100]
3 years ago
5

Would you expect the entire crop grown from your preferred stalk to show the characteristics of the parent crop? Explain your an

swer.​
Biology
1 answer:
padilas [110]3 years ago
5 0

Answer:

Over the ages the tendency of crop improvement efforts has been to select varieties with traits that give the highest return, largely by concentrating on genetic strains that combine the most desirable traits. The resulting homogeneity and uniformity can offer substantial advantages in both the quantity and quality of crop harvested, but this same genetic homogeneity can also reflect greater susceptibility or pathogens. Thus it appears the more that agricultural selection disturbs the natural balance in favor of variety uniformity over large areas, the more vulnerable such varieties are to losses from epidemics. The increased risks presented by genetic selection and the increased cultivation of only a few selected cultivars are easily perceived. Chapters 1 and 2 of this reports focus on crop vulnerability, because it is a broadly recognized problem. The issue of genetic vulnerability, however, is only one of several important problems affecting the management of global genetic resources.

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Question 4 (1 point)
disa [49]

Answer: status symbols

Explanation:

Status symbols are simply referred to as the objects that shows the social class or economic position of a person.

With regards to the information given in the question, we can see that the pointy-toed boots, a silk scarf, a pair of Wranglers, and a cowboy hat were used to show the status of the cowboy.

5 0
3 years ago
What type of organism is a one-celled organism that functions as a single unit?
Mnenie [13.5K]
Hello there, fellow human being!

The answer is D. unicellular.

Hope this helped!
~Ruru
5 0
4 years ago
Read 2 more answers
How many<br> dependent<br> variables do you<br> want in an<br> experiment?
IrinaK [193]

Answer:

you only want 1

Explanation:

hope this helps

7 0
3 years ago
Read 2 more answers
A couple planning their family are aware that through the past three generations on the husband's side a substantial number of s
Nesterboy [21]

Answer:

a) There are lots of genes on chromosome 1 could be affected, and the gametes could be imbalanced (missing segments of DNA or whole chromosomes)

b) Roughly 50%

c) No. I would advise that the couple undergo preimplantation genetic diagnosis, so that a zygote carrying the normal copy of chromosome 1 could be selected.

Explanation:

Chromosome 1 is one of the largest and most gene rich chromosomes. An inversion that covers 70% of its length would cover lots of genes.

While an inversion on its own would not seem problematic (as all the genes on the chromosome are still there), when it comes to meiosis, the sister chromatids would not be able to correctly align, and crossing over would further complicate this. It could also lead to unbalanced gametes missing entire parts of the chromosome. Therefore, there are likely numerous genes that will be affected and messed up by the inversion.

This could explain the high incidence of past still births, as if lots of genes are affected, and non-functional, the pregnancy would be rendered non-viable, or highly deleterious causing premature death.

b) There is a 50% chance of a child inheriting the defective copy of chromosome 1 (and 50% of a chance of them inheriting the normal chromosome 1. Therefore, there is likely a 50% chance that future offspring would be affected by defects

c) No. I would advise that the couple undergo preimplantation genetic diagnosis. In this, the couple undergoes in vitro fertilization (IVF). When embryos are produced through IVF, they can then be tested for the presence of the abnormal chromosome. Embryos will only be implanted into the mother if the normal chromosome 1 is present.

6 0
3 years ago
Different theories about the origin of life
IgorLugansk [536]

Answer:

In evolutionary biology, abiogenesis, or informally the origin of life (OoL), is the natural process by which life has arisen from non-living matter, such as simple organic compounds. ... Many approaches to abiogenesis investigate how self-replicating molecules, or their components, came into existence.

Explanation:

7 0
3 years ago
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