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Natasha2012 [34]
3 years ago
8

Recessive inheritance occurs only when a person receives two __________ alleles, one from each

Biology
1 answer:
Charra [1.4K]3 years ago
7 0
Recessive alleles. Recessive alleles are only expressed phenotypically when the offspring receive recessive genes from each parent. In other words they are only expressed phenotypically when they occur in pairs. In the presence of dominant gene they are never expressed phenotypically and the offsprings with both the recessive and dominant genes occurring concurrently are referred to as carriers.   
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What problem did scientists have with getting podophyllotoxin from the Himalayan mayapple for cancer treatment?
natita [175]
The Himalayan mayapple<span> is not an easy plant to </span>get<span> hold of. Yet we humans keep trying, because the poisonous plant also naturally produces </span>podophyllotoxin<span>, a preliminary compound in etoposide—classed as an essential medicine by the World Health Organization (WHO)</span>
6 0
3 years ago
4. There are a variety of receptors and second messenger systems in cells that in many cases exhibit cross-talk with each other
frutty [35]

Answer:

These 3 receptors are different from each other. They do differ from each other by their location and function.

1. Testosterone receptor :  It is an Androgenic receptor

2. Ferrotransferrin receptor :  It acts as an element-binding protein which is iron responsive.

3. Fibroblast growth factor :  It acts as a growth factor.

Explanation:

1. Testosterone :

Location- Xq 11-12 in the X chromosome.

Function-  

  1. maintains male skeletal integrity by osteoblast and osteocytes.
  2. maintains female sexual, somatic and behavior.
  3. develops male sexual characters.

2. Ferrotransferrin :

Location- chromosome 3q21

Function-

  1. intakes iron in the cell.
  2. maintains the cellular iron equilibrium.
  3. post-transcriptional modification.  

3. Fibroblast (growth) :

Location- chromosome 4p16.3

Function-

  1. helps in bone development.
  2. helps in bone growth maintenance by ossification.

8 0
3 years ago
The next first-quarter Moon after November 17 occurred closest to
Flauer [41]

Answer:

December 9

Explanation:

Just take out December

Becoming 9, 14, 17, 24

Closest to -13 is 9

So I guess it's A

I hope this helps you :)

5 0
3 years ago
Read 2 more answers
Which statement about plants cells is MOST accurate? A) Plant cells take in nutrients by phagocytosis. B) Plant cells do not nee
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The answer is 1000% D) Plant cells, take in small molecules through the cell membrane

7 0
3 years ago
Read 2 more answers
Which level of biological organization consists of all of the living and non livingthings in a particular area?
WARRIOR [948]

Answer:

Ecosystem

Explanation:

The ecosystem includes a total of the abiotic and biotic components of a region. These components interact with each other and make the ecosystem self-sufficient in terms of energy and nutrients. Climatic conditions, physical factors, soil type, and its feature together make the non-living or abiotic part of an ecosystem. They interact among themselves and with the living components by nutrient cycling. All the species of living beings together make the biotic components of an ecosystem. They interact with each other by food chains and food webs.

Oceans are an example of the aquatic ecosystem while deserts are terrestrial ecosystems.

3 0
3 years ago
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