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4 years ago

1. In the fast change, how are other parts of the ecosystem affected?

1 answer:

8 0

The limit of ecosystems to give advantages to people, that is to give biological community administrations, gets from natural cycles of water, nitrogen, carbon, and phosphorus. These procedures have now and again been altogether altered by human movement. Changes have been quicker in the second 50% of the twentieth century than at some other time in recorded mankind's history.

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A scientist crossed two pea plants, both having the genotype RrYy. The Punnett square representing the cross is shown in the tab

Shalnov [3]

Parental genotypes: RrYy x RrYy
Offspring genotypes: RRYY, RRYy, RRyy, RrYY, RRyy, rrYY, rrYy, rryy

The conclusion is incorrect because there is a chance that the offspring may have the genotype rryy, in which it has no dominant alleles.

5 0

4 years ago

What pet ownership trend began in the 17th century? Why was this trend so popular and has it continued today?

natta225 [31]

Answer:

Pet keeping wasn't generally accepted in Europe until the end of the 17th century, and it wasn't common among the middle classes until the late 18th century. Pet keeping in its present form is probably a 19th century Victorian invention. At this time, it was perceived as a link with the natural world, which itself was no longer seen as threatening. It also allowed a visible demonstration of man's domination over nature.

In present-day societies, dogs have a number of functional roles, from ornamental to status symbol, as helpers, and as companions. Dogs can also act as a channel for personal expression because people express their personality in the breed they own. For example, rare breeds are often used as indicators of status. Guide dogs for blind people and hearing dogs for deaf people are examples of pets who are kept as helpers.

But the most common reason for owning pets in Western societies is companionship. In recent years, there's been a growing awareness of the very positive effects this relationship can have on human health and psychological well-being, and a recognition of the therapeutic value of companion animals.

4 0

3 years ago

Which of the following processes results in the least amount of genetic

Artemon [7]

Answer:

segregation of alleles

Explanation:

because that the ways it suppose to be

5 0

3 years ago

Imagine that a couple is planning to have children. The male is heterozygous for tongue rolling and homozygous dominant for unat

Amiraneli [1.4K]

Answer:

F1 generation: RrUu, rrUU, rrUu, RrUU

25% : 25%: 25%: 25%

Ratios

genotype: 1: 1: 1: 1 ...(from punnet square)
phenotype: 1 : 1

Explanation:

Punnett squares are a diagrammatic way of deciding the characteristics of hybrid offspring created by crosses in genetic breeding. Parental genotypes and phenotypes are widely recognized, and all usually obey normal Mendelian ratios and inheritance.

Mendelian genetics focuses on the origin or heritability of characteristics. Such traits are packed into one's own gamete, acquired by themselves, and sometimes display superiority, where one's impact can mask those of another trait.

These are called the Law of Segregation, Independent assortment and Dominance respectively.

For this cross... Assuming:

Unattached lobes= dominant

Rolling tongue= dominant
Parent generation or P generation:

Gametes:

R → rolling dominant (R), non-rolling recessive (r)

U → unattached dominant (U), attached recessive (u)

P generation: RUrU× rUru

rolling, unattached × non-rolling, unattached

F1 generation: RrUu, rrUU, rrUu, RrUU

25% : 25%: 25%: 25%

Ratios

genotype: 1: 1: 1: 1 ...(from punnet square)
phenotype: 1 : 1

<em><u>Half the offspring have unattached lobes and can roll their tongues while the other half have unattached lobes and cannot roll their tongues...</u></em>

Each punnet cross is attached below

6 0

4 years ago

What do organisms use most of this energy for?

klio [65]

Answer:

Explanation:

They need energy to do all these necessary feats.

6 0

3 years ago

Read 2 more answers