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Blababa [14]
2 years ago
7

Use your knowledge of inheritance (the passing of traits from parents to offspring) to explain why

Biology
1 answer:
yarga [219]2 years ago
4 0

Answer:

Fraternal twins can be different genders because they are two completely different eggs getting fertilized; but even two same gender fraternal twins do not look completely alike. Whereas for identical twins since one egg is splitting into two, the two cells have the same exact DNA make up and chromosomes.

I also believe the technical part of it is to do with genetics, like ressesive and dominant genes, because they can be the same gender, ex. both girls and one has blue eyes, fair skin, and blonde hair, the other twin has brown eyes, black hair and tan skin. The parents could be part of the genes but there is also grandparents maybe the mom's mom has blonde hair and blue eyes, with fair skin. But the dad he has brown eyes, black hair and tan skin. The moms genes were recessive, but the grandma's genes were dominant.

I tried to explain it as best as I could I hope it helps!

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9. Write an mRNA strand that is complementary to the DNA strand AATTGC. Circle a codon.
andrew-mc [135]

Answer:

UUAACG

Explanation:

The complementary strand of the DNA strand AATTGC would be UUAACG.

The complementary nucleotide for Guanine [G] will be Cytosine [C] and applies to both DNA and RNA. But the complementary nucleotide for Adenine [A] will be Thymine [T] in DNA and Uracil [U] in RNA.

A codon is a triplet of nucleotides, so it could be any three nucleotides in the strand. Example: AAT, ATT, TTG or TGC.

3 0
2 years ago
Why are all cells very small?
kolezko [41]

Answer:

Cells are small because they need to keep a surface area to volume ratio that allows for adequate intake of nutrients while being able to excrete the cells waste. That is why the cell needs to be small. The smaller it is, the larger the surface area to volume ratio is. ... This is why cells are so small.

explicación:

The important point is that the surface area to the volume ratio gets smaller as the cell gets larger. Thus, if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume. ... That is why cells are so small.

7 0
2 years ago
The interaction between which protein and ion initiates muscle coupling?
labwork [276]

Answer:

Troponin and calcium ions.

Explanation:

Troponin is a component of thin filament along with tropomyosin and actin. It is a protein complex to which calcium binds and start the production of muscular force.

Calcium also playing a very important role in muscle contractions, it binds with troponin and helping to move tropomyosin.

When calcium ion attached to troponin, then conformational changes occurs in troponin shape and moves which allow tropomyosin going away from its inhibitory position from the myosin-binding sites on actin. After this, the energized myosin head starts binding to the actin molecules and starts the cross bridge cycle, which helping in shortening the muscle's fiber.

3 0
3 years ago
A newborn baby has a soft spot on the top of its head. over the next few months, the soft spot gradually hardens. what explains
GREYUIT [131]

A new born has soft spot on he top of its head. This is called as fontanelle and is diamond in shape present on the top of the head of the baby.

Babies skull is very soft and can be very easily moulded, to help them squeeze through the birth canal at the time of delivery.

Moulding is done in the skull of the babies as it is most largest part of the body during the time of delivery.

As soon as the skull and bones of the baby meet and fuse they become hard gradually.

6 0
2 years ago
According to the video above, what happens to the color of an object as it moves in relation to the observer?
Afina-wow [57]
It gets blurry and further away because it is not changing
5 0
3 years ago
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