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irga5000 [103]
3 years ago
12

-. In which phylum does a coelom first appear?

Biology
1 answer:
adoni [48]3 years ago
8 0

Answer:

The answer is a. Annelida

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The ability to taste the chemical PTC is due to a single gene in humans.
Ganezh [65]

0:3:1

Explanation:

Tasters have the dominant allele for the itter taste of PTC, they can be homozygous TT and heterozygous Tt.

Non-tasters are supposed as autosomal recessive characters

they are homozygous recessive tt when expressed

Given in the equation two heterozygotes parents would produce offspring with the trait in the following ratio.

Tt (parent 1)

Tt (parent 2)

 If a punnet square is made

    T      t

T  TT    Tt

t    Tt     tt

The phenotypic character is in the ratio of 0:3:1

There will be 25% chances of recessive trait of non-tasters in the progeny of heterozygous parents.

5 0
3 years ago
I need help can someone help me it is a weather question
viktelen [127]

Answer:

I belive the answer is C

7 0
2 years ago
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What are the pros and cons of CRISPR-cas9
professor190 [17]

Answer:

It has incomparable advantages over other gene editing tools.

Explanation:

For example, the CRISPR-Cas9 system has more target sites than ZFNs and TALENs, and Cas9 has many variants that can be used in a variety of studies. Moreover, the system is extremely easy to use and can be executed in almost any laboratory.

The most important advantages of CRISPR/Cas9 over other genome editing technologies is its simplicity and efficiency. Since it can be applied directly in embryo, CRISPR/Cas9 reduces the time required to modify target genes compared to gene targeting technologies based on the use of embryonic stem (ES) cells.

Disadvantages of CRISPR technology: CRISPR-Cas9 off-target; The effect of off-target can alter the function of a gene and may result in genomic instability, hindering it prospective and application in clinical procedure.

this the best i got, hope it helps :)

7 0
3 years ago
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Which is an example of scientific evidence that can be used to critique a new scientific argument?
Margaret [11]
When we perform a study, we test a specific hypothesis to see whether our hypothesis is supported by the data or not. If our hypothesis is not supported by the data, then we can argue that a specific argument (that would be important for this hypothesis) does not have a claim in scientific research. 

This is more broadly meant though. Usually you need to perform multiple studies and test multiple hypothesis to be able to critique a scientific argument and see whether the claims it makes and the predictions it makes hold up in scientific research. 
6 0
3 years ago
Help plz asappppppppp
makkiz [27]

Answer:

A. Whales evolved from four-legged animals.

Explanation:

I'm 100% on this one, because on Plato we were learning about evolution, and one of the slides said that whale had evolved from four legged animals.

Hope this helps ya!!!

Got a screenshot for proof!

4 0
3 years ago
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