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Nikolay [14]
3 years ago
12

How does an eclipse occur?

Biology
1 answer:
Scorpion4ik [409]3 years ago
6 0
It occurs by cosmic coincidence and the suns Diameter is about 400 times that of the moon.
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Imagine that a given species has a gene for hair color (B = dominant brown, b = recessive white) and a gene that controls hair l
serg [7]

Answer:

Phenotypes: All Brown Hair Color and All Short Hair Length

Genotypes:

Homozygous dominant hair color and  homozygous dominant hair length: (BBSS, BBSS, BBSS, BBSS).

Homozygous dominant hair color and heterozygous hair length: (BBSs, BBSs, BBSs, BBSs)

Heterozygous hair color and homozygous dominant hair length: (BbSS, BbSS, BbSS, BbSS)

Heterozygous hair colour and heterozygous hair length: (BbSs, BbSs, BbSs, BbSs)

Explanation:

Hair color :

B = dominant brown

b = recessive white

Hair length :

S = dominant short

s = recessive long

The dihybrid cross between parents with the genotypes:

BBSS × BbSs

If BBSS self crossed; we have the following traits= BS, BS, BS, BS

If BbSs self crossed; we have the following traits= BS, Bs, bS, bs

The dihybrid cross is as follows:

              BS                     BS                  BS                BS

BS          BBSS                BBSS            BBSS             BBSS        

Bs          BBSs                 BBSs            BBSs              BBSs

bS          BbSS                BbSS           BbSS              BbSS

bs          BbSs                 BbSs            BbSs              BbSs

Phenotypes = All Brown Hair Color and All Short Hair Length

Genotypes include:

Homozygous dominant hair color and  homozygous dominant hair length: (BBSS, BBSS, BBSS, BBSS).

Homozygous dominant hair color and heterozygous hair length: (BBSs, BBSs, BBSs, BBSs)

Heterozygous hair color and homozygous dominant hair length: (BbSS, BbSS, BbSS, BbSS)

Heterozygous hair colour and heterozygous hair length: (BbSs, BbSs, BbSs, BbSs)

7 0
3 years ago
What is an example of a function of a cell?
valina [46]

Answer:

Photosynthesis

Explanation:

Breaking down sugar, locomotion, copying its own DNA, allowing certain substances to pass through the cell membrane while keeping others out.

5 0
2 years ago
Please help I need to turn in this paper asap the paper
Nadya [2.5K]

Atoms gain electrons to form anions.

Atoms lose electrons to form cations.

Back in middle school, my chemistry teacher taught me a good way to remember whether an ion was a cation or an anion. When an atom loses an electron, it becomes positive, and when an atom gains an electron, it becomes negative.

Cation sort of sounds like “cat,” which is positive (Yay! Cats!).

Anions, on the other hand, sounds like “onion,” which is negative (Ew! Onions!).

There’s other ways of memorizing it, but this way was the easiest for me.

-T.B.

3 0
3 years ago
Lead is toxic, but do you know why?
nlexa [21]

Answer:

Lead is toxic mostly because during biochemical reactions it tries to substitute certain metals. hence while doing this, It disrupts with the proteins that control blood pressure, the production of heme and the formation of sperm. Through reactions that propagate electrical signals in the brain, lead often consumes calcium, which reduces the capacity to think and retrieve information.

Explanation:

Lead is toxic mostly because during biochemical reactions it tries to substitute certain metals. hence while doing this, It disrupts with the proteins that control blood pressure, the production of heme and the formation of sperm. Through reactions that propagate electrical signals in the brain, lead often consumes calcium, which reduces the capacity to think and retrieve information.

8 0
2 years ago
Read 2 more answers
Describe the region or states affected by the occluded front?
Leviafan [203]
The state that affected by the occluded front is nyc
6 0
2 years ago
Read 2 more answers
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