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2 years ago

What are two types of symbiosis?

Biology

1 answer:

olga nikolaevna [1]2 years ago

3 0

Answer:

mutualism and parasitism

Examples:

mutualism: crocodiles and birds

parasitism: mosquitoes and humans

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You crossed a plan with red flowers with a plant with white flowers both plants are pure breeding all the aspirins have pink flo

Flura [38]

Heterogenous dominant i'm fairly sure

6 0

2 years ago

Place the following steps in order for motor control.

Romashka [77]

Answer:

3, 5, 1, 4, 2.

Explanation:

Neurons are the structural and the functional unit of the nervous system. Two main types of neurons on the basis of their function are sensory neurons and motor neurons.

The motor control in order body occurs in a sequential step. The motor program is selected by the pre motor cortex. This neuron is further stimulated by basal nuclei of the thalamus. This further stimulate the lower motor neuron. This causes the contraction in the skeletal muscle. This information is further move to cerebellum if movement is required.

Thus, the correct order is 3, 5, 1, 4, 2.

8 0

3 years ago

Analyze the result of a cross between two organisms that are both heterozygous for two different genes (AaBb) use a Punnett squa

krok68 [10]

(1) All the genotypes are as follows: AABB, AaBB, AABb, AaBb, aaBB, aaBb, AAbb, Aabb, aabb.

(2) Assuming that Aa is dominant and Bb is recessive, there will be 9 phenotypes with both A and B allele dominant (i.e. AaBb, AABb); there will be 3 phenotypes with just the A allele dominant (i.e. Aabb, AAbb); there will be 3 phenotypes with just the B allele dominant (i.e. aaBb, aaBB); and there will be 1 phenotype with both alleles recessive (i.e. aabb). The phenotypic ratio in this case is 9:3:3:1.

(3) The probability of producing an offspring with the aabb genotype is 1/16 or 6%.

4 0

3 years ago

In fruit flies, an autosomal mutation in the gene for wing veining results in cross veinless wings. This mutation is recessive.

mezya [45]

Answer:

B. cv+cv w+w

Explanation:

Fruit flies have a special nomenclature to write the genotype of individuals.

If the mutation is recessive, you have to write it with lowercase letter(s).
If the mutation is dominant, you have to write it with capital letter(s).
Wild-type alleles are indicated with a superscript plus (+).

In this problem, both crossveinless (cv) and white (w) mutations are recessive.

<u>For that reason, a heterozygous individual's genotype for both genes will be written as:</u>

3 0

3 years ago

Historic Westminster Abbey in London, England, has been damaged by the sulfur dioxide and nitrogen oxide in acid rain. This is a

Nesterboy [21]

Answer:

i think its chemical weathering

Explanation:

hehe

3 0

3 years ago