Chose all of the reasons why a cell needs to divide.

The earliest known mineralized structures in vertebrates are associated with .

yulyashka [42]

The earliest known mineralized structures in vertebrates are associated with feeding.

<h3>What is mineralized structures?</h3>

Tissues that have incorporated minerals into soft matrices are referred to as mineralized tissues. These tissues typically serve as a structural support or a shield of protection.
Mineralized tissues include bone, mollusk shells, radiolarians, diatoms, Euplectella species of deep sea sponges, tendon, cartilage, tooth enamel, and dentin.
Over millions of years of evolution, these tissues have been precisely tailored to improve their mechanical properties. As a result, there have been numerous studies on mineralized tissues because there is much that can be learned from nature, as seen by the expanding field of biomimetics.
These tissues are prime candidates for artificial tissue duplication due to their extraordinary structural organization and technical qualities. Mineralized tissues encourage multifunctionality, flexibility, and downsizing.

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7 0

1 year ago

Which statement is true about prokaryotic cells?<br><br> I NEED HELP ASAP PLEASE

GuDViN [60]

Answer:

A. They contain a single circular DNA molecule.

Explanation:

8 0

2 years ago

How to survive in pressures lead to natural selection

lbvjy [14]

Answer:

Mutations and sexual reproduction increase genetic variation in a population. Natural selection occurs when environmental pressures favor certain traits that are passed on to offspring. ... Individuals may mutate, but natural selection acts by shifting the characteristics of the population as a whole.

Explanation:

8 0

3 years ago

What is the right answer

777dan777 [17]

Answer:

B

Explanation:

5 0

3 years ago

(c) Based on the data in Table 1, describe why the dominant alleles for body color and wing shape are the alleles that produce a

Brrunno [24]

Answer:

Check the explanation

Explanation:

Consider the below table of F2 data of phenotypic flies: we can reconstruct the table as seen in the second attached image below:

From the above observations it is clear the Gray body long wings and Ebony body vestigial wings are the parental combinations and that the Gray body vestigial wings and Ebony body long wings are the recombinants.

Also the ratio indicates that Gray body is dominant over ebony body and that long wings is dominant over vestigial wings.

here the genes for the two characters have shown independent assortment which means that the genes are unlinked if located on the same chromosome or are located on different chromosomes.

Now F1 hybrid= GgLl (G for Grey and L for Long)

Cross between F1 hybrid and true breeding Gray vestigial (GGll)

GgLl x GG ll

Gametes-----------> GL Gl gL gl Gl

GL Gl gL gl

Gl GGLl GGll GgLl Ggll

(Gray long) (Gray vestigial) (gray Long) (Gray vestigial)

Therefore the probability of getting the flies with gray body vestigial wings= 2/4= 50%

b) The reason why the students obtained the above given F2 results involving a cross between true breeding Gray body and long wings with true breeding Ebony body and vestigial wings is that the genes for the two charcters asssort independently in F2 generation and that the genes are not linked as:

Parents------------------> GGLL x ggll

Gametes -----------------> GL gl

F1---------------------> GgLl (Gray long but in heterozous condition)

Now GgLl x GgLl

Gametes GL Gl gL gl GL Gl gL gl

Here gametes assorted independently and hence in F2 generation we got the above results (U can show the results in the form of punnett square.

4 0

3 years ago