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SIZIF [17.4K]
3 years ago
6

"Crossing Over" is a key part of the process because it leads to:

Biology
1 answer:
bulgar [2K]3 years ago
5 0

Answer:

d

Explanation:i just know

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Help it’s due at 11:59
Nonamiya [84]

Answer:

tt

Explanation:

Firstly, look at the oldest female shape. It would be a circle since that is female and which circle, would be the oldest one. In line one. Since the circle is white, the gene has not been carried so it must be reccessive.

tt because it is the only allele pair that would give you the gene without obtaining that trait, meaning it is reccessive.

So it would make sense that tt is the choice.

6 0
3 years ago
An important piece of information in the management of a person infected with a chronic virus such as HIV is his/her "viral load
butalik [34]

Answer:

the answer is 3.2 x 10⁴

Explanation:

The Polymerase Chain Reaction (PCR) is a technique widely used in molecular biology to exponentially amplify a specific DNA sample from a small amount of DNA. For this purpose, the PCR technique uses: 1- a DNA polymerase enzyme in order to synthesize new DNA copies and 2- one pair of DNA oligonucleotides (primers) which are complementary to the ends of the target DNA sequence. During each round of PCR, the double-stranded DNA template is unwound and each strand is used to synthesize a new DNA strand, thereby forming two new double-stranded DNA molecules. In consequence, each round of PCR doubles the amount of DNA.

6 0
2 years ago
Living organisms breathe oxygen into grow​
fredd [130]

Answer:

Most living things need oxygen to survive. Oxygen helps organisms grow, reproduce, and turn food into energy. Humans get the oxygen they need by breathing through their nose and mouth into their lungs. Oxygen gives our cells the ability to break down food in order to get the energy we need to survive.

Explanation:

5 0
2 years ago
The hepatic portal vein collects blood from the gi tract and conducts it to the ____.
Mnenie [13.5K]

Answer:

a.

Explanation:

The portal vein or hepatic portal vein (HPV) is a blood vessel that carries blood from the gastrointestinal tract, gallbladder, pancreas and spleen to the liver.

6 0
2 years ago
Which is the most likely result if the Ubx gene was activated either before or after it normally is activated in the sequence of
BigorU [14]

Answer:

D. The insect develops legs in other parts of its body.

Explanation:

HOX genes, also known as homeotic genes, are evolutionarily conserved genes (containing homeobox sequences) that encode master regulators of embryonic development in animals. Hox genes modulate the body plan of an embryo along the head-tail axis. In general, these genes are arranged in the same order as they are transcriptionally expressed along the anteroposterior body axis. Moreover, Ultrabithorax (Ubx) is a Hox gene that is responsible for the proper development of the third thoracic segment in insects. In <em>Drosophila</em>, it has been shown that different segments of the leg regulate their size in response to Ubx expression.

4 0
3 years ago
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