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elixir [45]
3 years ago
9

A checkered hen mates with a checkered rooster. The genes for the checkered trait are codominant in both parents. What are the c

hances that their offspring will be checkered?
A.
20 percent
B.
25 percent
C.
50 percent
D.
75 percent
E.
100 percent
Biology
1 answer:
iVinArrow [24]3 years ago
5 0

There are 75% chances that their offsprings will be checkered.

Explanation:

The gene version allele is received by an individual and if they are different then the gene of the parent which is dominating is expressed in the offspring. However, in the case of co dominance the offspring gets the trait of both parent alleles.

So, in this case the mating of checkered rooster and checkered hen with co-dominance in their trait of genes will produce checkered offspring with a chance of 75 percent as can be calculated by the punnet square. The result will be 3 out of 4 checkered offspring.

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Answer:

The proportion of plants with deep flowers in future generations will decrease and will be very low.

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In this particular environment, long-tongued bees used to visit plants with deep flowers to get their nectar. They used to get in contact with mature stamens and carry the pollen on their bodies to the next flower. During this process, long-tongued bees were able to ensure pollination and helped to keep a high reproductive rate of plants with deep flowers.

When shorted-tongue bees arrived at this environment, they were able to replace long-tongued bees. They also looked for the nectar of deep flowers, but instead of visiting them from the top, they were adapted to obtain nectar by drilling holes in the flower base. In this way, they missed the contact with mature stamens and pollen.

Long-tongued bees disappear, and short-tongued bees did not play a role in the pollination process of deep flowers, then the reproductive rate of these vegetable species probably started to decline.

Probably, with time, the proportion of plants with deep flowers in an environment dominated by short-tongued bees will be very low.

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