1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
In-s [12.5K]
3 years ago
6

What genes direct the

Biology
1 answer:
Valentin [98]3 years ago
3 0

Answer:

a. hox genes.

Explanation:

HOX genes have the following functions:

  • HOX genes are the homeobox subset.
  • They specify the areas of the embryo's body plan along the animal head-tail axis.
  • They are encoding Hox proteins that specify the position characteristics and ensure that the right structures form at the right position in the body.
  • They regulate high-level executive genes, such as transcription factors and intracellular signaling molecules, which adhere, number, form, and growth to cells.

The vertebrates are highly preserved.

The clusters and other genes occur uninterrupted.

Evolutionary, the heterogeneous regulatory areas between the genes most previously present are larger and more preserved than those present at the other ends of the clusters.

The characteristical feature is that these are homeodomain proteins with a highly preserved area of DNA binding encoded with homeobox gens.

You might be interested in
Explain how the terms speed velocity and acceleration are related to each other
muminat
Acceleration is a little more complicated. It is defined as the rate of change of the object's velocity over its change in time. ... Or, if the acceleration is negative, it's called deceleration and describes something slowing down. For something to speed up or slow down, it has to have a certain change in velocity
3 0
3 years ago
The Brazil nut tree, Bertholletia excels (n = 17), is native to tropical rain forests of South America. It is a hardwood tree th
Anna71 [15]

Answer:

Answer is option A.

Orchid bees are to Brazil nut trees as breezes are to pine trees.

Explanation:

In Brazil nut trees, the female orchid bees act as pollinators that help in pollination. In pine trees, wind or breeze helps in pollination.

Pine trees are gymnosperms and so they do not have flowers to attract pollinators like bees or butterflies or birds. They are wind-pollinated. Pine trees are monoecious i.e., both male and female reproductive structures (pine cones) are present on the same tree.

The male cones (catkins) produce pollen grains that are lightweight, less sticky and have air bladders or small wing-like structures. As a result of these features, the pollen grains can be easily carried and dispersed by the breeze. In order to prevent self pollination (pollen falling on the female cones of the same tree), the male cones are normally located on the lower branches of the pine tree.  

The female cones are located on the upper branches of the tree and the center of the cone contains eggs or ovules. The pollen grains that are carried by the wind, fall on the female cone of another pine tree. Each pollen grain grows a pollen tube into the center of the cone and the nucleus cell of the pollen travels through the tube and reaches the egg, where it combines with the egg to form an embryo. The embryo eventually grows into a seed. The seeds of pine trees are then dispersed by wind or animals such as squirrels.

6 0
3 years ago
Worksheet: DNA,RNA and Protein Synthesis
sineoko [7]
DNA<span> and </span>RNA<span> are nucleic acids found in the cells of living organisms. ... The </span>synthesis<span> of </span>proteins<span> starts with transcribing the instructions in </span>DNA<span> into mRNA. The mRNA is then carried out of the cell's nucleus into the cytoplasm, specifically into structures called ribosomes.</span>
3 0
3 years ago
Read 2 more answers
The extensions of the sarcolemma that carry the nerve impulses deep into the sarcoplasm are the?
MatroZZZ [7]

Answer:

T tubules

Explanation:

Transverse tubules (T tubules) are extensions of the sarcolemma that penetrate into the interior of the muscle transmitting electrical signals to the sarcoplasmic reticulum.

3 0
3 years ago
Mary wants to determine if there is a relationship between room color and sleep. Based on her research, Mary makes an educated g
katrin2010 [14]

Answer:

An experiment that directly test the hypothesis.

Explanation:

Although there is quite a bit missing from Mary's scientific investigation, the thing that sticks out the most is the fact that Mary is missing an experiment. Mary's hypothesis states that people would fall asleep faster if their room color were to be painted blue. To prove that her hypothesis is true, Mary would need to conduct an experiment to see whether or not she was correct.

6 0
3 years ago
Read 2 more answers
Other questions:
  • Use the image to answer the question.<br> What is the name of the aluminum ion?
    14·1 answer
  • Explain the process of cellular respiration. list the raw materials and products of this process. tell how the body eliminates t
    10·1 answer
  • Why are both tigers and humans classified into the Animalia kingdom within the Eukaryota domain?
    10·2 answers
  • Why do you think premenopausal women need more iron than<br> men of the same age?
    8·1 answer
  • When is mitosis complete?
    9·2 answers
  • If immigration and emigration numbers remain equal which of these could cause a slowed growth rate
    11·2 answers
  • What molecule can mix with water and it also a source of energy and a storage area?
    11·2 answers
  • ______ support mango trees out of the water.
    6·1 answer
  • Which of the following is an example of modern ocean monitoring equipment?
    10·2 answers
  • hello! I had one quick question I wanted to ask just to make sure I was right. the question is "How do animals obtain the energy
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!