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3 years ago

In a worm what part of the digestive system would you see in a cross-section anterior to the gizzard

1 answer:

5 0

Crop is the part of the digestive system you would see in a cross-section anterior to the gizzard in a worm. Crop is a thin wall organ that acts as a temporary food storage chamber. The esophagus leads to the crop and the organ next to it is the gizzard which serves as the food grinding chamber.

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What are some functions that are similar in both nerve cells and muscle cells?

muminat

The functions that both the nerve cells and muscle cells have in common are the following;

- Both cells are excitable

- They both experience voltage difference in the cell membrane

- The cell membrane of both of cells has electrochemical impulses

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3 years ago

Although women have made great strides over the last century, they only make up a small percentage of people earning degrees in

barxatty [35]

In 1970 only about 20% of Psychology majors were women. In recent polls women now make up just over 70% of psychology majors. I would say the answer is False.

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3 years ago

Read 2 more answers

Which of the following is not a part of environmental science?

zalisa [80]

The answer is letter D.) the components of a cell

Environmental science is an interdisciplinary field that studies the interactions of the environment. The component of a cell can be studied through the lens of biology and may not require addition disciplines.

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8 0

3 years ago

Read 2 more answers

A population of 100 tigers has 30 with horizontal stripes. Using pedigrees, you ascertain that horizontal striping is caused by

bixtya [17]

Assuming that this population is in Hardy-Weinberg equilibrium, we can sayt that the probability that, given enough time, all tigers in the population will have horizontal stripes is 30% = 0.3.

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Available data:

Population size, N = 100 tigers
Number of Tigers with horizontal stripes = 30
Horizontal stripes is caused by an autosomal recessive mutation.

We need to know the probability that all tigers in the population will have horizontal stripes, which is the recessive phenotype.

We assume that the population is in Hardy-Weinberg equilibrium, so there should be no evolution.

Since the population is in H-W equilibrium, the allelic, genotypic and phenotypic frequencies will remain the same generation after generation.

Now, we will calculate the allelic and genotypic frequencies of horizontal striped individuals in the population.

There are 100 individuals, and only 30 have horizontal stripes.

So, the phenotypic frequency, F(HS) is 30/100 = 0.3 = 30%

Since this is a recessive phenotype, this value equals the genotypic frequency, F(hh) = 30%

Finally, we can get the allelic frequency by taking the square root of this value.

F(hh) = q² = 0.3

f(h) = q = √0.3 = 0.55 = 55%

According to these calcs, the probability for the fixation of the recessive allele is 55%, and the probability that all individuals express the recessive horizontal stripes phenotype is 30%.

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You can learn more about Hardy-Weinberg equilibrium at

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2 years ago

motikmotik

Answer:

The correct option is D. analogous

Explanation:

We speak of an analogy when one structure is similar to another or has the same function, but whose embryonic development and its origin or ancestor is not common, they are different, in other words, they are analogous structures if they fulfill functions or acquire similar characteristics starting from the same medium, without requiring them to have the same evolutionary origin (they may or may not be similar structurally and embryologically).

3 0

3 years ago