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tino4ka555 [31]
2 years ago
9

Please help!!

Biology
2 answers:
DanielleElmas [232]2 years ago
8 0
D.) because the plastic beads are bigger than the holes in the sieve but the sand and salt are not
igor_vitrenko [27]2 years ago
3 0

Answer:

B

Explanation:

you can just take a magnet and all the iron filings will come out of the water. happy cheating!!!>.<

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Imagine that a newly discovered, recessively inherited disease is expressed only in individuals with type O blood, although the
erastova [34]

Complete question:

Imagine that a newly discovered, recessively inherited disease is expressed only in individuals with type O blood, although the disease and blood group are independently inherited.

A normal man with type A blood and a normal woman with type B blood have already had one child with the disease. The woman is now pregnant for a second time.

Assuming that both parents are heterozygous for the gene that causes the disease, what is the probability that the second child will also have the disease? Express your answer as a fraction using the slash symbol and no spaces (for example, 1/2).

Answer:

The probability that the second child will also have the disease is 1/16.

Explanation:

<u>Available data:</u>

  • Two genes independently inherited: one for blood type, the other for disease
  • Man with type A blood  x  Woman with type B blood
  • Both parents are heterozygous for the gene that causes the disease; Dd

If the man has A blood, and the woman has B blood, and they already have an affected child, this means that they must be heterozygous for blood type too.

Cross:  

Parentals)           AiDd         x      BiDd

Gametes)  AD  Ad  iD  id       BD  Bd  iD  id

Punnett square)      AD       Ad       iD       id

                     BD   ABDD  ABDd  BiDD BiDd

                     Bd   ABDd   ABdd   BiDd Bidd

                     iD    AiDD    AiDd    iiDD   iiDd

                     id    AiDd     Aidd     iiDd    iidd

F1) <u>Genotype</u>:

1/16 ABDD

2/16 ABDd

1/16 ABdd

1/16 AiDD

1/16 BiDD

2/16 AiDd

2/16 BiDd

1/16 Aidd

1/16 Bidd

1/16 iiDD

2/16 iiDd

1/16 iidd

<u>Phenotype:</u>

3/16 A/B normal

4/16 A normal

4/16 B normal

3/16 0 normal

1/16 0 affected by the disease.

3 0
3 years ago
What is the constant of “Which bait works best for a homemade fly trap?” Plz answer quick!!!!
steposvetlana [31]

Answer:

Mix scraps of meat (the older, the better) with something sweet (see list below). Lots of people swear by using rotten fish or shrimp, which probably work best because they smell so much. Bait for Fruit Flies: Use fruit (the riper, the better), apple cider vinegar, fruit juice, syrup, wine, beer, or any combination.

Hope this helps!

Please give me brainliest if this helped you!

5 0
3 years ago
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Why is carbon essential to all known life on Earth?
ser-zykov [4K]
Carbon forms the key component for all known life on Earth. Carbon is the basis of all molecules. Its is easily able to bond because of the 4 valence electrons.
4 0
2 years ago
The diagram shows the box for an element in the periodic table.
PolarNik [594]

Answer:

13

Explanation:

The atomic number for Aluminum (Al) is 13. If you have access to the periodic table, this would've taken a few seconds.

6 0
2 years ago
Rain Forest, Atlantic Ocean, and Desert are examples of ...
melamori03 [73]

Answer:

ecosystems

Explanation:

4 0
3 years ago
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