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mojhsa [17]
3 years ago
12

Klineflter syndrome is a defect occurs during

Biology
1 answer:
expeople1 [14]3 years ago
7 0

Explanation:

The 47,XXY karyotype of Klinefelter syndrome spontaneously arises when paired X chromosomes fail to separate (nondisjunction in stage I or II of meiosis, during oogenesis or spermatogenesis

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Compared to most animals, the growth of most plant structure is best described as _____. A) perennial
Tanzania [10]

Compared to most animals, the growth of most plant structures is best described as indeterminate.

<h3>What does indeterminate growth in plants mean?</h3>

Plants retain the capacity for unlimited growth throughout their life, which means growth which occurs throughout life. E.g. As in plants, due to meristematic activity of tissues plants keep growing throughout their life . It can also be termed as open growth.

plant growth in which the main stem continues to elongate indefinitely without being limited by a terminal inflorescence or other reproductive structure and growth characterised by sequential flowering from the lateral or basal buds to the central or uppermost buds.

To learn more about  indeterminate growth, visit:

brainly.com/question/3009209

#SPJ4

7 0
2 years ago
What is the starchy material inside seeds that provides nutrients for the embryonic plant called?
PilotLPTM [1.2K]

Answer:

Endosperm

Explanation:

  • An endosperm develops in a seed after a process known as double fertilisation occurs in the ovary of a flower whereby one of the sperm nuclei inside a pollen grain reaches the interior of the embryo sac and fuses with the two polar nuclei forming a triploid nucleus which is the primary endosperm.
  • The endosperm supports embryonic growth by supplying nutrients and acting as a mechanical barrier to protect the embryo during seed development and germination.
  • The endosperm has living cells that regulate seed germination.
  • The endosperm is secreted with hydrolysis enzymes through the gibberellin hormone that induces the synthesis of amylase in the aleurone layer.
  • The hydrolysis enzyme catabolizes starch which act as energy source providing carbon and nitrogen for seed germination and seedling development.

6 0
4 years ago
How do we know the age of fossils?
ivanzaharov [21]

Relative dating is used to determine a fossils approximate age by comparing it to similar rocks and fossils of known ages. Absolute dating is used to determine a precise age of a fossil by using radiometric dating to measure the decay of isotopes, either within the fossil or more often the rocks associated with it.

That's how you know the age of fossils hope this helps diamonds in the name

6 0
3 years ago
A farmer raises black and white chickens. To his surprise, when the first generation of eggs hatch all the chickens are black wi
Vedmedyk [2.9K]

Answer:

Option C

Explanation:

Let the allele for black color be "B"

and the allele for white color be "b"

Since after F1 generation all the offspring have black  body with white speckles throughout their feathers.

Thus the allele for black and white show co dominance.

Genotype of parent after F1 generation would be Bb for speckled chickens

Cross between two specked adults will produce -

Bb x Bb

BB, Bb, Bb, bb

Out of four offspring 1 is black (BB), 1 is white (bb) and two are speckled (Bb)

Thus 50% of the offspring will be speckled, 25% will be black, and 25% will be white.

Option C is correct

6 0
3 years ago
What are the levels of organization ?
kotegsom [21]
<span>They are organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.</span>
4 0
3 years ago
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