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3 years ago

List the two vascular tissues that transport materials throughout a plant AND describe what they each transport.

Biology

1 answer:

raketka [301]3 years ago

4 0

Answer:

xylem and phloem

Explanation:

Xylem is a vascular tissue that transports water to the leaves of the plant , while phloem tranporsts the food or the glucose made by the leaves to all parts of plant

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How did we determine that mutations are random

lana [24]

Mutations are random. Mutations can be beneficial, neutral, or harmful for the organism, but mutations do not "try" to supply what the organism "needs." Factors in the environment may influence the rate of mutation but are not generally thought to influence the direction of mutation.

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3 years ago

Examine the genotype for an individual who is AaBbCcDc. Predict the outcomes of meiosis and the potential gamete combinations th

Katarina [22]

Answer: 16 different gametes

ABCD
ABCd
ABcD
ABcd
AbCD
AbCd
AbcD
Abcd
aBCD
aBCd
aBcD
aBcd
abCD
abCd
abcD
abcd

Explanation:

Gamete formation involves the random and independent segregation of alleles. During anaphase 1 (meiosis), occurs the independent separation of homologous chromosomes that migrate to opposite poles of the cell. This separation generates different chromosomal combinations in the daughter cells. There are two alternatives per homologous pair.

The number of gametes with different combinations is 2ⁿ, where

n = number of homologous pairs.

In the exposed example there are 4 pairs of chromosomes, so

the number of possible combinations of chromosomes = 2ⁿ = 2⁴ = 16

Individual: AaBbCcDdEe

You can make use of the fork line method to easily figure out the possible gametes.

A.......B.........C........D → ABCD

........d → ABCd

...........c.........D → ABcD

........d → ABcd

b.........C........D → AbCD

........d → AbCd

...........c.........D → AbcD

........d → Abcd

a.......B.........C........D → aBCD

........d → aBCd

...........c.........D → aBcD

........d → aBcd

b.........C........D → abCD

........d → abCd

...........c.........D → abcD

........d → abcd

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3 years ago

Which organism has cerebral ganglia in its head connected to ladder-like arrangements of nerve fibers?

dmitriy555 [2]

The organism that cerebral ganglia in its head connected to ladder-like arrangements of nerve fibers is

A. flatworms

A flatworm is an invertebrate whose central nervous system or the cerebral ganglia is connected to its body by means of ladder-like nerve cords.

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What region of the world has the highest percent of soil degraded by human activity? answer?

mestny [16]

<span>Soil degradation by human activity is a huge global issue since it deteriorates the soil and there is a reduction in quality of the soil and its productivity. The region that is facing this issue largely is Asia. This is the reason solving this issue is now an international agenda.</span>

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3 years ago

What is the outcome of Mitosis

Sidana [21]

The outcome is really two identical daughter cells...but from this list I would say A. two identical nuclei

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