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1 year ago

How do life zones different in each type of aquatic ecosystem?

1 answer:

4 0

Well there are many factors that go into the categorization of different life singers in each aquatic system, from the ph levels in the water, the temperature, the depth, the presence of lights, as well as foreign factors s as well such as natural disasters, human/unnatural predatory fishing (invasive), and not to mention pollution, all of which can change the balance of an aquatic system to a minimal degree to turning it into an ecological “dead zone”

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Imagine that a given species has a gene for hair color (B = dominant brown, b = recessive white) and a gene that controls hair l

serg [7]

Answer:

Phenotypes: All Brown Hair Color and All Short Hair Length

Genotypes:

Homozygous dominant hair color and homozygous dominant hair length: (BBSS, BBSS, BBSS, BBSS).

Homozygous dominant hair color and heterozygous hair length: (BBSs, BBSs, BBSs, BBSs)

Heterozygous hair color and homozygous dominant hair length: (BbSS, BbSS, BbSS, BbSS)

Heterozygous hair colour and heterozygous hair length: (BbSs, BbSs, BbSs, BbSs)

Explanation:

Hair color :

B = dominant brown

b = recessive white

Hair length :

S = dominant short

s = recessive long

The dihybrid cross between parents with the genotypes:

BBSS × BbSs

If BBSS self crossed; we have the following traits= BS, BS, BS, BS

If BbSs self crossed; we have the following traits= BS, Bs, bS, bs

The dihybrid cross is as follows:

BS BS BS BS

BS BBSS BBSS BBSS BBSS

Bs BBSs BBSs BBSs BBSs

bS BbSS BbSS BbSS BbSS

bs BbSs BbSs BbSs BbSs

Phenotypes = All Brown Hair Color and All Short Hair Length

Genotypes include:

Homozygous dominant hair color and homozygous dominant hair length: (BBSS, BBSS, BBSS, BBSS).

Homozygous dominant hair color and heterozygous hair length: (BBSs, BBSs, BBSs, BBSs)

Heterozygous hair color and homozygous dominant hair length: (BbSS, BbSS, BbSS, BbSS)

Heterozygous hair colour and heterozygous hair length: (BbSs, BbSs, BbSs, BbSs)

7 0

3 years ago

In pea plants, tall (T) plants are dominant over short (t) plants. If a heterozygous (Tt) pea plant is crossed with a homozygous

Thepotemich [5.8K]

The fact that each plant gets only one allele
from each parent plant is detailed in the law of segregation

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2 years ago

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How does the possible impact of a chromosomal mutation that occurs?

Papessa [141]

If the mutation occurs during meiosis, the mutation will be incorporated into a gamete. If that gamete is the one that eventually fuses with another gamete (i.e. if it's the sperm that fertilizes the egg), that mutation will be passed on to the offspring. As all the offspring's cells are the result of the first two gametes, all the organism's cells will have that mutation. Obviously this can have dire consequences for the offspring, if the mutation is harmful.

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3 years ago

Areas of the cerebral cortex involved with the initiation of motor impulses are localized to the posterior aspect of the _______

solmaris [256]

Both questions in this item are just similar. The area in the cerebral cortex that is involved in the initiation of the motor impulses are localized in the posterior aspect of the frontal lobe. The answer to this item is the third choice.

Frontal lobe is one of the principal areas of the brain that is involved in the motor functions. The specific cortex for this function is commonly called as the M1 or the primary motor cortex.

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2 years ago

Classify the glands as endocrine or exocrine glands.

Gennadij [26K]

Answer: Endocrines: Adrenal, Pineal

Explanation: Endocrine glands are hormones.

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3 years ago

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