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3 years ago

Which situation could cause an ecosystem to lose its equilibrium

Biology

2 answers:

Dimas [21]3 years ago

6 0

There are many ways that an ecosystem can lose it's equilibrium or balance.

A few potential causes can be, the introduction of a new species, the sudden death of some species, and natural hazards (weather related or seismic changes). Lastly, one of the biggest causes are man-made hazards.

Damm [24]3 years ago

3 0

Answer:

Competiton among species for food /APEX/

Explanation:

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2. Dominant trait: cleft chin (C) Mother’s gametes: Cc

kakasveta [241]

Answer No 2:

c c

C Cc Cc

c cc cc

The genotype of the offsprings would be Cc, Cc, cc, cc i.e heterozygous cleft chin and no cleft chin. The phenotype of the offsprings could be 50% cleft chin and 50% without cleft chin.

there will be 50% chance of the child to have cleft chin.

Answer No 3:

A a

A Aa Aa

a Aa aa

There will be 25% chance for the offspring to have arched feet. As arched feet is a recessive trait, so for this trait to occur both the alleles of the gene should be recessive i.e aa.

Answer No 4:

B b

b Bb bb

As blonde is a recessive trait, so both the alleles for this gene should be recessive for this trait to occur. Hence, according to the punnet square, there will be 50% chance for the offspring to be blonde.

Answer No 5:

F f

F FF Ff

f Ff ff

As normal vision is a resessive trait, hence both the alleles of the gene should be recessive for the trait to occur. According to the punnet square, there is 25% chance that the child will have normal vision.

3 0

3 years ago

1. Explain vegetative reproduction?

Yakvenalex [24]

Answer:

Asexual plant propagation methods produce new plants from vegetative parts of the original plant, such as the leaves, stems and roots. These methods are generally referred to as vegetative propagation.

<h3>e.g. rhizome, bulb, tuber etc</h3>

<h2>Hope it helps you!!</h2>

5 0

3 years ago

If the female fly has EE and the male fly has EE, what are the possible percentages of phenotypes and genotypes of their offspri

algol [13]

Answer:

100% EE, 100% red eyes

Explanation:

For an organism, the genotype refers to the genetic characteristics of the organism while the phenotype refers to the physical characteristics of the organism.

The red eyes (E) is dominant while the white eyes (e) is recessive.

Since both parents are EE, the genotype of their offsprings would be EE, EE, EE, EE

That is: EE × EE = EE, EE, EE, EE

Hence the genotype is 100% EE.

Also, the phenotype is 100 red eyes.

4 0

3 years ago

Give two ways to preserve and conserve endemic species.

Jobisdone [24]

Educate your family about endangered species in your area.

Recycle and buy sustainable products.

Reduce your water consumption.

Volunteer. If you don't have money to give, donate your time

6 0

3 years ago

An individual heterozygous for eye color, skin color, and number of eyes mates with an individual who is homozygous recessive fo

sukhopar [10]

Answer:

B) 1 black eyes, green skin, two eyes : 1 black eyes, green skin, one eye : 1 black eyes, white skin, two eyes : 1 orange eyes, green skin, two eyes : 1 orange eyes, white skin, two eyes : 1 orange eyes, white skin, one eye

Explanation:

Parentals: BbGgCc x bbggcc

The punette square diagram of the cross of these two parents is attached.

B = black eyes, b = orange eyes;

G = green skin, g = white skin;

C = two eyes, c = one eye

Progeny with BbGgCc genotype → black eyes, green skin, two eyes = 8

Progeny with BbGgcc genotype → black eyes, green skin, one eye = 8

Progeny with BbggCc genotype → black eyes, white skin, two eyes = 8

Progeny with bbGgCc genotype → orange eyes, green skin, two eyes = 8

Progeny with Bbggcc genotype → black eyes, white skin, one eye = 8

Progeny with bbGgcc genotype → orange eyes, green skin, one eye = 8

Progeny with bbggCc genotype → orange eyes, white skin, two eyes = 8

Progeny with bbggcc genotype → orange eyes, white skin, one eye = 8

So, if we will see them in the form of ratio then each of the genotype will be in the ratio of 1 i.e. black eyes, green skin, two eyes: black eyes, green skin, one eye: black eyes, white skin, two eyes: orange eyes, green skin, two eyes: black eyes, white skin, one eye: orange eyes, green skin, one eye: orange eyes, white skin, two eyes : orange eyes, white skin, one eye = 1:1:1:1:1:1:1:1.

So, in view of above option B is most appropriate.

Note: In a trihybrid cross, a total of 64 progeny types may be produced.

6 0

3 years ago