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g100num [7]
4 years ago
11

How can you figure out whether an animal is homozygous dominant or heterozygous?

Biology
1 answer:
GalinKa [24]4 years ago
3 0
In a test cross, the organism with the dominant trait is always crossed with an organism with the recessive trait. If any offspring show the recessive trait the unknown genotype is heterozygous. If all the offspring have the dominant trait the unknown genotype is the homozygous dominant.
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Can recessive genes be expressed if the gene pair is heterozygous and why?​
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Answer:

Recessive alleles are denoted by a lowercase letter (a versus A). Only individuals with an aa genotype will express a recessive trait; therefore, offspring must receive one recessive allele from each parent to exhibit a recessive trait.

Explanation: Is this what you were looking for?

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" the second stage of aerobic respiration is ______."
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Which stage of aerobic cellular respiration makes the majority of ATP?
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Cycads are considered endangered species and their trade is severely restricted. Customs officials stop suspected smugglers, who
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<h2>Cycads and Palm</h2>

Explanation:

The resemblance between cycads and palm trees is only superficial

  • Cycads are basically woody plants which have roots, a stem, leaves and reproductive structures known as cones
  • The main roots of cycads are thickened and fleshy and as they may have storage capacities they are often termed tuberous
  • Along with the fleshy stem they may have contractile properties which serve to regulate the level of the stem in the ground
  • Specialized, upright-growing, branched roots, known as coralloid roots, are also produced by all species of Cycads
  • The stems of cycads may be completely subterranean or emerge from the ground and be trunk-like
  • The leaves of most cycads are once-divided (pinnate) and often develop an attractive palm-like crown
  • Palm trees are a type of evergreen plant belonging to the Arecaceae family of plants
  • Palm trees have branch-less stems and large evergreen leaves
  • Generally, leaves of palm trees are either pinnate (feather-like leaves) or palmate (fan-like fronds)
  • Another way to identify the type of palm tree is by the trunk shape, some of the tallest species of palm trees have long slender single trunks and dwarf varieties have usually short fat palm trunks
  • Some smaller palm tree species may have clustered trunks with 3 or 4 short trunks growing together
  • There are also some dwarf palm trees that just have bushy pinnate fronds growing out the ground and don’t have any trunk at all

 

8 0
3 years ago
Use the correct terms to complete the sentences that explain how the fluid mosaic model of a membrane works.
Ierofanga [76]
<h3>Answer:</h3>

The Fluid Mosaic Model declares that membranes are formed of a Phospholipid Bilayer with several protein molecules drifting about inside it. The ‘Fluid’ section describes how any components of the membrane can run nearby loosely if they are not connected to different components of the cell. The ‘mosaic’ section explains the ‘patchwork’ of proteins that are detected in the Phospholipid Bilayer.

<h3>Explanation:</h3>

There is a lipid bilayer in which the protein molecules are embedded. The lipid bilayer gives fluidity and elasticity to the membrane. Carbohydrates are also found in a cell membrane. The plasma membrane is said to be two-dimensional structure or liquid we can say which does not allow the lateral diffusion of membrane components. The plasma membrane has the texture of vegetable oil at body temperature, because of which the proteins and other substances move across it. That's why the plasma membrane is described as using the fluid-mosaic model.

4 0
3 years ago
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