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astraxan [27]
3 years ago
7

Please answer this question

Biology
1 answer:
Katen [24]3 years ago
6 0
The Sperm cell meets the egg cell.
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Determine the nature of the expression of the lacZYA genes, represented by L, and label each genotype as constitutive, inducible
VladimirAG [237]

Answer:

Explanation:

Symbol          Representation

I-                     laci mutant cannot bind to the operator

Is                    laci mutant always bind to the operator

OC                 Operator mutant that prevent repressors binding

F’                    the wild type operator, O+, and laci gene on a plasmid

L                     lacZYA genes

I+ O+ L+   Inducible

I+ OC L+   Constitutive

I+ OC L+, F’   Constitutive

I- O+ L+, F’   Inducible

Is O+ L+    no transcription

Is O+ L+, F’   no transcription

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3 years ago
Write a paragraph, using at least 4-6 sentences, that explains how and why the classification system has changed over time.
Marizza181 [45]

Answer:

they change over time based on newly gathered information, such as molecular information about a species. Organisms are now classified in a more specific manner which has ended up introducing so many new species of organisms.

Explanation:

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