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4 years ago

Peter has a problem with his semicircular canals. this probably means that

Biology

2 answers:

makvit [3.9K]4 years ago

5 0

Answer:

it was he has trouble with his balance

Explanation:

Naddik [55]4 years ago

3 0

<span>Peter has a problem with his semicircular canals. This probably means that he has trouble with his balance.
These canals, found in the ears, help people keep their balance while standing or sitting. If there is problem with those parts of the ear, then balance is compromised.
</span>

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Natural selection Darwin hypothesized that there requisites for natural selection to occur and that there are definite steps to

lana66690 [7]

Answer:

A. sexual reproduction must occur.

Explanation:

i may be wrong because we cant see the models but biased on what i know A seems to be the correct one.

i'm sorry i couldn't be more help.

7 0

3 years ago

Read 2 more answers

Why are iron meteorites the core of asteroids?

Anvisha [2.4K]

Answer:

They consist mainly of iron-nickel metal with small amounts of sulphide and carbide minerals. During the decay of radioactive elements in the early history of the solar system, many asteroids melted and the iron they contained, being dense, sank to the centre to form a metallic core.

Explanation:

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8 0

3 years ago

How could the botanist best determine whether the genotype of the green-pod plant is homozygous or heterozygous?

murzikaleks [220]

Answer:

Explanation:

Homozygosity is when the two alleles (gene form) are the same while heterozygosity is when the alleles are of different types.

In a gene, an allele is capable of masking the expression of another. The allele being expressed or that masks is called the DOMINANT allele while the allele being masked is the RECESSIVE allele.

A recessive allele will only be expressed (phenotypically) if the two alleles are of the same type i.e. homologous but when a dominant phenotype is expressed, one cannot ascertain whether the organism is heterozygous or homozygous for that gene. e.g T is the gene coding for height in plant, T which represents tallness is dominant over t, representing shortness. In a heterozygous (Tt) and homozygous dominant (TT) state, the plant will be phenotypically tall but will only be short in a homozygous recessive (tt) state.

Since the plant will be tall in homozygous (TT) or heterozygous (Tt), we cannot detect the actual genotype of the plant. Hence, a test cross is done.

A test cross is a cross between a dominant phenotype and a homozygous recessive in order to determine the actual genotype of the dominant organism i.e. whether homozygous or heterozygous.

In this case involving pod color gene, since the botanist is trying to determine whether the genotype of the green pod plant is heterozygous or homozygous, it means the allele for green pod is dominant over that of yellow pod (recessive).

N.B: The recessive trait can only be expressed if it is homozygous. Therefore, the yellow pod plant has homozygous recessive genotype.

A test cross is conducted by the botanist to determine whether the green pod plant is heterozygous or homozygous by crossing it with a yellow pod plant (homozygous recessive).

If any of the offspring plants exhibit recessive traits i.e. yellow pods, it means the parent green pod plant is heterozygous but if all the offspring plants show phenotypic dominant traits i.e green pod, it means the parent green pod plant is homozygous.

8 0

4 years ago

You are a farmer whose farmland is cool, moist, and shady. (Assume that these growing conditions are equivalent to 80 drops/hr o

laiz [17]

Define
n = number of seeds planted.
k = number of seeds that successfully become plants.

The probability of making a profit is
p =50% = 0.5
Therefore the probability of not makng a profit is
q = 1 - p = 0.5

According to the binomial distribution, the probability of k successes out of n trials is
$P(k \, of \, n) = _{n}C_{k}\,p^{k} q^{n-k} \\ where \\ _{n}C_{k} = \frac{n!}{k! (n-k)!}$

Create a table as shown below by using the graphing calculator.

n k P(k of n)
---- ----- ------------
4 2 0.375
8 4 0.273
10 5 0.246
12 6 0.226
16 8 0.196
20 10 0.176
50 25 0.0.112
100 50 0.08

A graph of this table shows that the probability of success i below 0.5 (50%) for all practical values of n (the number of seeds planted).

Answer: The farmer will lose money.

8 0

3 years ago

Read 2 more answers

HELP ASAP!!!

Katena32 [7]

Answer:

Energy conversion, also termed as energy transformation, is the process of changing one form of energy into another. Energy conversion occurs everywhere and every minute of the day. There are numerous forms of energy like thermal energy, electrical energy, nuclear energy, electromagnetic energy, mechanical energy, chemical energy, sound energy, etc. On the other hand, the term Energy Transformation is used when energy changes forms from one form to another. Whether the energy is transferred or transformed, the total amount of energy doesn’t change and this is known as the Law of Conservation of Energy.

7 0

2 years ago