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Natalka [10]
3 years ago
8

A crime scene investigator might study dna to find out...

Biology
1 answer:
Alja [10]3 years ago
4 0

Answer:

who did the crime

Explanation:

You might be interested in
The mammalian tail and
cluponka [151]

The mammalian tail and the human coccyx, the leaves of pitcher plants and cacti, are homologous organs while, the flippers of penguins and dolphins, as well as the shells of turtles and crabs are analogous structures.

<h3>What are homologous organs?</h3>

Homologous organs are those that are similar in structure but operate differently. They resulted from divergent evolution.

Divergent evolution occurs when species are closely connected to the same ancestors but develop similar structures that perform different tasks in different environments.

Analogous Organs are organs from various creatures that, despite their appearance, perform the same function.

In the given case, the mammalian tail and coccyx, as well as the leaves of pitcher plants and cacti, are homologous organs, whereas penguin and dolphin flippers, as well as turtle and crab shells, are analogous structures.

Thus, these are the different instances of homologous and analogous organs.

For more details regarding homologous structures, visit:

brainly.com/question/1274613

#SPJ1

5 0
1 year ago
What is constat mean?​
BARSIC [14]

Answer:

con·stant

/ˈkänstənt /

adjective

occurring continuously over a period of time.

"the pain is constant"

Similar:

continual

continuous

persistent

sustained

abiding

round-the-clock

ceaseless

unceasing

perpetual

incessant

never-ending

everlasting

eternal

endless

unending

unabating

nonstop

perennial

unbroken

uninterrupted

unrelieved

interminable

unremitting

relentless

unrelenting

without respite

sempiternal

steadfast

steady

resolute

determined

persevering

tenacious

dogged

unwavering

unflagging

unshaken

Opposite:

inconstant

fitful

noun

a situation or state of affairs that does not change.

"the condition of struggle remained a constant"

Similar:

unchanging factor

unchanging state of affairs

unchanging situation

Explanation:

5 0
3 years ago
What happens at the end of the transcription process?
Goshia [24]

Answer:

C) DNA produces messenger RNA, also called mRNA.

Explanation:

During transcription DNA is used as a template to make RNA. RNA then leaves the nucleus and goes to a ribosome in the cytoplasm, where translation occurs. Translation reads the genetic code in mRNA and makes a protein.

5 0
3 years ago
Read 2 more answers
Which endocrine gland is responsible for the release of a hormone that stimulates T-cell development and proper immune response
Mama L [17]

Answer:

The correct answer would be d. thymus.

The thymus is a specialized lymphoid organ of an immune system.

It serves as the site for training and maturation of T-lymphocytes or T cells.  

It is composed two identical lobes each containing outer region termed as cortex and inner region termed as medulla.

T-cells are first trained and selected in the cortex region via positive selection. In this, T cells which are able to bind to foreign antigens are selected and rest are degraded.

The selected T cells then move in the medulla region where they are selected by negative selection. In this, the T cells which binds to self-antigens are degraded and rest survive to become functional T cells.

8 0
3 years ago
Does geographic distance between salamander populations increase their reproductive isolation? To answer this question, research
Nataly_w [17]

Question: Does geographic distance between salamander populations increase their reproductive isolation?  To answer this question, researchers studied populations of the dusky salamander (Desmognathus ochrophaeus) living on different mountain ranges in the southern Appalachian Mountains.  The researchers tested the reproductive isolation of pairs of salamander populations by leaving one male and one female together and later checking the females for the presence of sperm. Four mating combinations were tested for each pair of populations (A and B)—two within the same population (female A with male A and female B with male B) and two between populations (female A with male B and female B with male A).  The proportion of successful matings for each mating combination was measured. For example, when all the matings of a particular combination were successful, the researchers gave it a value of 1; when none of the matings were successful, they gave it a value of 0. Then the researchers calculated an index of reproductive isolation that ranged from 0 (no isolation) to 2 (full isolation). The reproductive isolation value for two populations is the sum of the proportion of successful matings of each type within populations (AA + BB) minus the sum of the proportion of successful matings of each type between populations (AB + BA).

The table (Figure 1) provides data for the geographic distances and reproductive isolation values for 27 pairs of dusky salamander populations.

Part A - Understanding experimental design

What hypothesis did the researchers test in this study?

Answer:

"Reproductive isolation increases with geographic distance between dusky salamander populations"

Explanation:

The mechanisms of reproductive isolation are a assemblage of evolutionary mechanisms, behaviors and physiological procedures dangerous for speciation. They avert followers of dissimilar types from manufacturing offspring, or confirm that any offspring are germ-free. While in allopatric speciation the reproductive isolation is resolute superficially by the spatial isolation of populations, during sympatric speciation specific groups of persons create distinct mating organizations with self-like persons while distribution the similar home with the rest of the unique inhabitants.

3 0
3 years ago
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