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Alex_Xolod [135]
3 years ago
5

What happens to the expression of the lacI gene if lactose is not available in the cell? View Available Hint(s)

Biology
1 answer:
olchik [2.2K]3 years ago
3 0

Answer:

There is no change, the lac l gene is constitutively expressed, regardless of the presence of lactose.

Explanation:

Lacl gene codes for the lac repressor hence is always expressed to produce lac repressors which may or may not be bounded dependent on the presence of lactose. Lacl gene expression is not regulated, thus is constitutively expressed.

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A student observed cells from an onion root tip in a microscope. The diagram shows her observation. What was happening in the ce
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Cell Division!

Explanation:

What is being witnessed is mitosis. That includes your general interphase, anaphase, telophase, metaphase, cytokinesis, etc. These are all part of cell division.

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3 years ago
DELETION OF SNORD116, A PRADER-WILLI SYNDROME CANDIDATE GENE, DOES NOT AFFECT CIRCADIAN RHYTHMS IN MICE MODELS
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Prader-Willi syndrome (PWS) is a gentic disorder which has an impact on numerous physiological systems. PWS affected individuals (specifically babies) experience delayed growth, significant hypotonia (low muscle tone), and feeding issues. It does effect circadian rhythms in mice models.

SNORD116, often referred to as HBII-85, is a non-coding RNA (ncRNA) molecule that contributes to the alteration of other small nuclear RNAs (snRNAs). Unlike the majority of other snoRNAs, SNORD116 is not significantly complementary to ribosomal RNA and is expressed widely in the brain (but not in PWS patients).

According to the studies, SNORD116 cause sleep defect in patients with Prader-Willi syndrome. Same observation was seen in mouse models too. Paternal expression of SNORD116 is thought to be a potential gene for the sleep disruptions/circadian rhythm’s that the majority of PWS sufferers.

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3 0
10 months ago
The glomerulus differs from other capillaries in the body in that it ________.
zhuklara [117]

Answer:

The correct answer is "is drained by an efferent arteriole".

Explanation:

The missing options of this question are:

A) has a basement membrane

B) is impermeable to most substances

C) is drained by an efferent arteriole

D) has a blood pressure much lower than other organ systems

The correct answer is option C) "is drained by an efferent arteriole".

The glomerulus are a network of small blood vessels that are specialized to function within the kidneys. The role of the glomerulus is to filter plasma and being one of the steps of water absorption in the kidneys. The glomerulus differs from other capillaries in the body in that it is drained by an efferent arteriole, which carry the blood that has already filtered by the glomerulus.

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3 years ago
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kykrilka [37]
Dark Energy explains:
How groups of objects function together, and also to keep the universe expanding
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4 0
2 years ago
The picture shows fruit produced by two parents and fruit produced by one of their offspring.
fenix001 [56]

Answer:

incomplete dominance

Explanation:

hope this helps

5 0
2 years ago
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