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3 years ago

I will mark u as brainliest correct answer only

Biology

2 answers:

exis [7]3 years ago

8 0

Tiger frogs have similarities in their mitochondrial DNA that are not shared by other frog species

KonstantinChe [14]3 years ago

5 0

Answer:

I believe the answer is D.

Explanation:

Hope this helps! ^^

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The genes for miniature wings (m) and garnet eyes (g) are approximately 8 map units apart on chromosome 1 in Drosophila. Phenoty

Anestetic [448]

The following phenotypic classes reflect offspring that were generated as a result of a crossover event

wild type

miniature wings
garnet eyes

Explanation:

When the miniature wings and garnet eyes links up with the 8 map unit that are present between them. After that the presence of two recombinant classes must complement together and make 8% of total i.e. they contribute 4% each. together the parental classes make up to 92% by contributing 46% one.

This can be understood through a phenotypic ratio calculation, which can be expected from it.

wild type: 4% x 800 = 32

miniature wings: 46% x 800 = 368

garnet eyes: 46% x 800 = 368

miniature wings, garnet eyes: 4% x 800 = 368

5 0

3 years ago

True or false. The absence of a trait cannot be used as a synapomorphy in phylogenetic analysis

kolbaska11 [484]

Answer:

False

Explanation:

Phylogenetic analysis is a means of establishing evolutionary relationships.

Synapomorphy is a shared ("syn") character that is different from the form found in an ancestor that distinguishes a clade (monophyletic group)from other organisms

The absence of a trait can be used as a synapomorphy in phylogenetic analysis. For example, the loss of a trait, such as the loss of legs in snakes, can be a valuable synapomorphy for a clade.

4 0

3 years ago

carolus linnaeus created the linnaean system of classification using 2 latin names to designate each organism

Zepler [3.9K]

Answer:

Carolus Linnaeus devised the binomial nomenclature system under which the organisms were named using their Genus name and Species name. The Genus name was written first, forward by the species name. The system of binomial nomenclature allowed for assigning a scientific name to all the organisms so that the conversations between scientists could be made easier. For example, humans have the scientific name, Homo Sapiens, where Homo is the genus name and sapiens is the species name.

8 0

3 years ago

10) What gas is a product of photosynthesis?

stiks02 [169]

Photosynthesis produce 02 (oxygen)

5 0

3 years ago

1. Suppose the synthesis of an amino acid was accomplished by four enzymes encoded by four genes that formed an operon. Draw a m

vivado [14]

I have attached lac operon model having 4 genes. See attachment for better understanding.

Answer:

The Lac operon is controlled by two signals.

Initiation

Glucose and lactose concentrations control the initiation of transcription of the Lac operon through their effects on the Lac repressor protein and Cap.

Lactose absent (Repression)

When lactose is absent, the Lac repressor binds the Lac operator and shuts off expression of the operon.

Lactose present (Transcription)

Addition of lactose increases the intracellular concentration of a related compound, allolactose. allolactose binds to the Lac repressor, causing it to undergo a conformational change that releases its grip on the operator DNa.

Glucose absent (Repression)

When glucose is absent, cyclic aMp (red triangle) is produced by the cell and Cap binds to DNA.

Glucose present (Transcription)

LacZ, the first gene of the operon, encodes the enzyme b-galactosidase, which breaks down lactose to galactose and glucose.

7 0

3 years ago