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alekssr [168]
3 years ago
8

Darwin hypothesized that new species could appear gradually through small changes in an ancestral species. What experiment did h

e conduct to test this hypothesis?
the breeding of finches
the breeding of pigeons
the observation of plants
the observation of dog breeds
Biology
2 answers:
Marysya12 [62]3 years ago
6 0

The answer is B the breeding of pigeons i just took the test

Mars2501 [29]3 years ago
5 0
B. The breeding of pigeons.
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A heterozygous white rabbit is crossed with a black rabbit. What is the probability of getting black rabbit offspring?
makkiz [27]

Answer:

1/2 or 50%

Explanation:

<em>From the illustration, we will logically assume that the white allele is dominant over the black allele. Let us also assume that the white allele is represented by A, the alternate black allele will be a. </em>

The heterozygous white rabbit will have the genotype Aa.

The black rabbit will have the genotype aa.

Crossing the two rabbits together:

               Aa    x    aa

            Aa   Aa   aa   aa

<em>1/2 Aa - white color </em>

<em>1/2 aa - black color</em>

Hence, the probability of getting a black rabbit offspring is 1/2 or 50%

7 0
3 years ago
How do strides indicate whether the walker is a male or female?
ZanzabumX [31]
Females usually have smaller foot prints and they usually step in a pigeon toed manner with a smaller stride. However males, usually walks with a straightforward foot or quite tilted outwards. This is how to differentiate strides of men from women. Stride is defined as to walk long though extending steps.  Women also walks gracefully they tend to walk femininely by swinging they hips and walking with short steps. In contrast, men's hip is quite stiffed when walking and takes longer steps when walking.
6 0
3 years ago
Will give brainliest plz help <br> Answer 12 plz
Ivan

Answer:

Abiotic factors, such as temperature, water, sunlight amounts, and regional terrain, directly effect biotic factors. Biotic factors are the living components of an ecosystem which include primary producers, consumers, and dexomposers.

Abiotic factors can effect organisms in many ways. Hey can effect primary producers negatively if there is too little sun, water, or nutrients in the soil. However, if there is too much of any one of these, they can still be negatively effected. With primary producers, it’s all about balance.

while consumers do not directly require the above conditions, they do rely on the plants and animals that feed on said plants to survive. If the plants do not have correct nutrients, they will not either. As far as terrain goes, they adapt to better cope with the environment. If they live in an aquatic enviromment for example, they acquire ways to more efficiently move through the water to look for food.

Decomposers rely on the remains of dead plants and animals in order to survive. They feed off of dead matter and the waste gets deposited into the soil. This in turn helps to give the soil its nutrients, and so the cycle continues.

Everything in nature is reliant on each other. This delicate balancing act is both beautiful and so very fragile. If one organism is removed, the entire ecosystem could suffer. This is why it is so critical to protect the environment we share with every other living creature on this earth.

6 0
3 years ago
Explain the difference between negative growth rate and zero growth rate.​
ziro4ka [17]

Answer:

Negative growth rate is when a population's average number of deaths is greater than its average number of births. Zero growth rate is when the average number of deaths equals the average number of births.

Explanation:

4 0
3 years ago
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Which of the following statements about PCR is/are FALSE? There may be more than one correct answer.
Harrizon [31]

Answer: The answer is C

Explanation:

After each PCR cycle, the amount of DNA does not increase in a linear manner

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