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kupik [55]
2 years ago
8

Does a kangaroo have a dorsal nerve cord notochord?.

Biology
1 answer:
777dan777 [17]2 years ago
3 0
It has a dorsal nerve chord
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Use the probability method to calculate the genotypes and genotypic proportions of a cross between AABBCc and Aabbcc parents.
lora16 [44]

For this, you need to use Punnett squares.

You know the genotype of the parents, and for the cross, you need to separate into two alleles, both genes.

AABBCc divided like ABC and ABc.

Aabbcc divided like Abc and abc.

Now you can cross them, and all probabilities will be:

AABbCc, AaBbCc, AABbcc and AaBbcc

So, you could say 25% of the offspring will be AaBbCc, 25% AaBbcc, 25% AABbCc, and 25% AABbcc

7 0
3 years ago
All the gametes of isogamous organisms are genetically identical.<br><br> True<br> False
Lady bird [3.3K]

Answer:

False

Explanation:

Gametes are formed by meiotic division, and classified by shape, size and activity. In some species they are undifferentiated, that is, isogamous, resembling, but not identical, regardless of gender. However, most species have heterogeneous gametes (anisogamy), differentiated by morphological, dimensional and mobility aspects.

6 0
3 years ago
In dna, which base pair goes with adenine
d1i1m1o1n [39]
Thymine
The two strands are held together by hydrogen bonds between the bases, with adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.
4 0
2 years ago
Introduced species can threaten biodiversity because they
eimsori [14]
They can create competition within a certain niche
6 0
3 years ago
Read 2 more answers
Which of these diseases results in meningitis caused by an encapsulated yeast?
amid [387]

Answer:

cryptococcosis

Explanation:

Cryptococcosis

It is an air-borne disease. It is caused after inhalation of soil which is contaminated by encapsulated yeast, Cryptococcus neoformans or C. gattii. The soil is infested with yeast which are contained in the waste of the birds. This disease affects the lungs since it is caused by inhaling the Cryptococcus. Cryptococcus can spread to skin and other organs, also involving the brain and meninges alongwith bones and joints.

Symptoms

Meningitis is common and can be discovered by symptoms like headache, vision problems and changes in behavior.

Lesions and ulcers on the skin which are similar to acne, are another sign of this disease.

Coccidioidomycosis

Another air-borne disease caused by inhaling dust containing spores. It is caused by Coccidioides fungus.

This disease, if ignored, can lead to severe damage to the respiratory organs, bones and/ or heart.

Visible symptoms include tiredness, fever, rashes and pain.

People with weaker immune system are easy victims of severity of this disease.

Candidiasis

This is caused by the yeast, Candida albicans. The skin and mucous membranes are the commonly affected areas. Candidiasis of the mouth results in thrush, which is usually found in infants. Vagina is another common area which is affected by this disease.

Histoplasmosis

This is the result of inhaling fungal spores which are carried by air. The lungs are the first organs to be affected. Initial symptoms include fever, cough, pain and bumps. More serious complications are indicated by blood in the cough, shortness of breath and heavy sweating.

Prevention

All the diseases discussed above are air borne diseases. The respiratory system is affected the most followed by the brain, since the microbe are easily spread through the body.

The most important prevention is the diet which helps boost the immune system. Another important prevention is cleanliness which is to be maintained until medical help becomes available.

5 0
3 years ago
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