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3 years ago

Which of these qualities did not lead humans to exploit sea turtles to near-extinction?

Biology

1 answer:

marishachu [46]3 years ago

8 0

E. Nesting females are attracted to lights.

Nearly all species of sea turtles are classified as endangered. But since the Endangered Species Act of 1973 it's gotten better.

They were slaughtered for their eggs, meat, skin and shells. Sea turtles also suffer from poaching and over-exploitation. Along with the destruction of their habitat and accidentally getting caught in fishing gear. If turtles were to ever go extinct, seagrasses would eventually die off and not only would it affect marine life it would eventually affect human life.

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Which receptors respond to a scraped knee?

Tpy6a [65]

The correct answer is B. Pain receptors. Pain receptors are activated by a type of stimulation such as getting hit or cut. These receptors carry this information to our brain using neurotransmitters which then our brain interprets this as pain.

4 0

4 years ago

A brain tumor has slowly robbed mr. schneider of his ability to recognize objects by touch. the tumor is probably centered in hi

Nitella [24]

The two sides of the brain contains four lobes each. These lobes are: (1) frontal lobe, (2) parietal lobe, (3) occipital lobe, and (4) temporal lobe. Each of these lobes have their own specific functions. Frontal lobe controls the voluntary movements or activity. Parietal lobe is responsible for information about taste, temperature, touch, and movement. Occipital lobe is responsible for the vision and lastly the temporal lobe is responsible for memories, taste, sight, and touch.

The answer to this item is the temporal lobe.

7 0

3 years ago

Red-green colorblindness is a sx linked trait. A normal vision female (who is also not a carrier) has a child with a colorblind

s2008m [1.1K]

Answer:

a and b

Explanation:

it is just the explanation

8 0

2 years ago

If two genes are found on different chromosomes, or if they are far enough apart on the same chromosome that the chance of a cro

nika2105 [10]

Complete question:

A wild-type tomato plant (Plant 1) is homozygous dominant for three traits: solid leaves (MM), normal height (DD), and smooth skin (PP).

Another tomato plant (Plant 2) is homozygous recessive for the same three traits: mottled leaves (mm), dwarf height(dd), and peach skin (pp).

In a cross between these two plants (MMDDPP x mmddpp), all offspring in the F1 generation are wild type and heterozygous for all three traits(MmDdPp).

Now suppose you perform a testcross on one of the F1plants (MmDdPp x mmddpp). The F2 generation can include plants with these eight possible phenotypes:

solid, normal, smooth

solid, normal, peach

solid, dwarf, smooth

solid, dwarf, peach

mottled, normal, smooth

mottled, normal, peach

mottled, dwarf, smooth

mottled, dwarf, peach

Assuming that the three genes undergo independent assortment, predict the phenotypic ratio of the offspring in the F2 generation.

Answer and Explanation:

Cross 1:

Parental) MMDDPP x mmddpp

F1) MmDdPp

Cross 2: Testcross

Parental) MmDdPp x mmddpp

Gametes) MDP MdP MDp Mdp mDP mdP mDp mdp

mdp mdp mdp mdp mdp mdp mdp mdp

Punnet Square)

mdp

MDP MmDdPp

MdP MmddPp

MDp MmDdpp

Mdp Mmddpp

mDP mmDdPp

mdP mmddPp

mDp mmDdpp

mdp mmddpp

F2) 8/64 = 1/8 MmDdPp, solid leaves, normal height, smooth skin

8/64 = 1/8 MmddPp, solid leaves, dwarf height, smooth skin

8/64 = 1/8 MmDdpp, solid leaves, normal height, peach skin

8/64 = 1/8 Mmddpp, solid leaves, dwarf height, peach skin

8/64 = 1/8 mmDdPp, mottled leaves, normal height, smooth skin

8/64 = 1/8 mmddPp, mottled leaves, dwarf height, smooth skin

8/64 = 1/8 mmDdpp, mottled leaves, normal height, peach skin

8/64 = 1/8 mmddpp, mottled leaves, dwarf height, peach skin

Another way of predicting the phenotypic ratio of the offspring in the F2 generation is by performing a testcross for each gene by separately and then multiplying their genotypic proportions. This is:

Leaves Gene

Parental) Mm x mm

Gamtes) M m m m

Punnet Square) M m

m Mm mm

F2) 1/2 Mm

1/2 mm

High Gene

Parental) Dd x dd

Gamtes) D d d d

Punnet Square) D d

d Dd dd

F2) 1/2 Dd

1/2 dd

Skin Gene

Parental) Pp x pp

Gamtes) P p p p

Punnet Square) P p

p Pp pp

F2) 1/2 Pp

1/2 pp

To get the phenotypic ratio of the offspring we multiply the genotypic proportion for each trait by the genotypic proportions of the other two traits, like this:

For plants with solid leaves, normal height, smooth skin

solid leaves ratio -> 1/2

normal height ratio -> 1/2

smooth skin ratio -> 1/2

MmDdPp ratio: 1/2 x 1/2 x 1/2 = 1/8

For plants with solid leaves, dwarf height, smooth skin

MmddPp ratio: 1/2 x 1/2 x 1/2 x 1/2 = 1/8

For plants with solid leaves, normal height, peach skin

MmDdpp ratio: 1/2 x 1/2 x 1/2 x 1/2 = 1/8

For plants with solid leaves, dwarf height, peach skin

Mmddpp ratio: 1/2 x 1/2 x 1/2 x 1/2 = 1/8

For plants with mottled leaves, normal height, smooth skin

mmDdPp ratio: 1/2 x 1/2 x 1/2 x 1/2 = 1/8

For plants with mottled leaves, dwarf height, smooth skin

mmddPp ratio: 1/2 x 1/2 x 1/2 x 1/2 = 1/8

For plants with mottled leaves, normal height, peach skin

mmDdpp ratio: 1/2 x 1/2 x 1/2 x 1/2 = 1/8

For plants with mottled leaves, dwarf height, peach skin

mmddpp ratio: 1/2 x 1/2 x 1/2 x 1/2 = 1/8

3 0

3 years ago

Explain the difference between coevolution, divergent evolution, convergent evolution.

Bumek [7]

Divergent evolution occurs when two different species share a common ancestor but have different characteristics from one another

Evolution is the idea that the animals and plants that are alive today have developed from past organisms.

Convergent evolution occurs when two different species do not share a common ancestor but have developed similar characteristics through adaption to similar environmental conditions.

Co-evolution is the influence of closely associated species on each other in their evolution.

7 0

3 years ago