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kvv77 [185]
3 years ago
14

How can a mutation give adults the the ability to digest milk? ​

Biology
1 answer:
m_a_m_a [10]3 years ago
6 0

A single point mutation in the DNA near the lactase gene changes the cytosine (C) nucleotide to a thymine (T). Individuals with the thymine (T) nucleotide are lactose tolerant and can digest the milk products in adulthood.

learned from science learn written information since Sep 3, 2009 as said there

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Fungi often form mutualistic relationships with plants. These mutualistic relationships are typically characterized by benefits
poizon [28]

Answer:

These mutualistic relationships are typically characterized by benefits to both the fungi and the plant that host them, with both benefitting at the same time.

Explanation:

Mutualism relationships are often characterized by a beneficial relationship between organisms. If one party benefits and the other doesn't benefit or the other doesn't really need the relationship, then that is not a mutualistic one.

Fungi partner plants for mutual benefits where the plant benefits and also reward the fungi. Two ways are explained below:

1. Fungi that live within plant tissues,  produce toxins that affect animals that feed on the plant so limiting grazing, this activity tends to make the plant not overgrazed and protects the plant tissues. In turn for this favor, the plant rewards the fungi with nutrients to aid their continuous survival.

2. Mycorrhiza is a type of fungi found in plant roots and they are fed with most especially carbohydrates. So as they grow in population and thrive well they also reward the plant with the capacity to take up more essential nutrients from the soil which is very important for plants productivity.

3 0
3 years ago
How do organisms X, Y and Z move?​
Lyrx [107]

Explanation:

three new organisms ,x,y and z were discovered by a group of zoologists they observed that organisms x and y depend on organisms z for food . organisms z does not depend on oraganisms for food . oraganisms x is the . only one that can move on its own

3 0
3 years ago
Mitosis starts and ends with
Anvisha [2.4K]

Answer:

23

Explanation:

After mitosis two identical cells are created with the same original number of chromosomes; 46. Haploid cells that are generated through meiosis, such as egg and sperm, only have 23 chromosomes, because, remember, meiosis is a "reduction division."

6 0
3 years ago
Where do daughter cells come from
TEA [102]

Explanation:

Daughter cells are cells that result from the division of a single parent cell. They are produced by the division processes of mitosis and meiosis. Cell division is the reproductive mechanism whereby living organisms grow, develop, and produce offspring.

3 0
3 years ago
The most apparent difference between modern humans and Australopithecus africanus is that Australopithecus africanus
lara [203]

Answer:

The correct answer is option d.

Explanation:

An extinct species of australopithecine, that is, Australopithecus africanus was the first species to be illustrated. It was of gracile or slender build and was considered to have been the direct ancestor of modern humans. Like modern man, the A. africanus did stood upright and walked upright, and were having free hands to use. However, they were smaller in height and lighter in weight in comparison to modern man.

3 0
3 years ago
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