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kap26 [50]
3 years ago
15

The enzyme β-galactosidase catalyzes what reaction?

Biology
1 answer:
posledela3 years ago
5 0

For breaking down lactose

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Plant height in pea plants is dominant (T). In a wild crop of 8,216 plants, 3,122 are short (tt). How many plants are homozygous
marshall27 [118]

Dominant allele for height T

Recessive allele t

Genotypes for tall Tt or TT

Genotype for short tt.

If there is 8,216 plants, 3,122 are short, which means that 5094 are tall.

Frequency of the recessive homozygous is q2 and it is 3122/8216=0.38, which means that only q=0.62

If p+q=1 (HW equilibrium), than p=0.38

Frequency of dominant homozygous is p2=0.14

The number of dominant homozygous is 0.14*8216=1183

The number of heterozygous is 5094-1183=3911

The number of recessive homozygous is 3122


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3 years ago
What would happen of the cell membrane were not selectively permeable
grandymaker [24]
If the cell membrane were not selectively permeable, then unwanted substances would transfer through instead of being blocked out. Think of it like this: you have a sifter with various sizes of spice in it. You only want the finer grains of spice in your food, so when you shake the sifter, the larger pieces of spice don't fit through the small holes that only allow fine grains. Then you are left with the small spices in your food and the large ones stuck in the sifter.
Hopefully this helps and I wasn't too confusing :)
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3 years ago
What did eukaryotes most likely evolve from apex?
Nostrana [21]
From my knowledge and what I learned when I took biology I would say that most likely eukaryotes evolved from prokaryotes
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What does the limbic system do? connects the brain and the spinal cord directs incoming sensory messages coordinates involuntary
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registers feelings, such as fear and pleasure


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Name the three categories of elements
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Answer: The classes are metals, nonmetals, and metalloids

Explanation:

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