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Sauron [17]
3 years ago
7

According to cell theory, which of the following would be composed of cells?

Biology
1 answer:
Alex787 [66]3 years ago
4 0

Answer:

insect

Explanation:

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What are the most likely percentages for offspring of two red/white-feathers parents?
weeeeeb [17]

Answer:

The question lacks options, the options are:

parents?

A.100% red/white-feather chickens.

B.50% white-feather chickens and 50% red/white-feather chickens.

C.33% white-feather chickens, 33% red-feather chickens, and 33% red/white-feather chickens.

D.25% white-feather chickens, 25% red-feather chickens, and 50% red/white-feather chickens

The Correct answer is D

Explanation:

According to the question, the hybrid chicken has a mixture of red and white feather phenotypes expressed at the same time. This tells us that the red and white alleles are CODOMINANT in the chicken i.e. none is dominant or recessive over the other.

Let's assume that (R) allele is the red feather colour while (r) allele is for white feather colour. Therefore, the red/white feathered chicken will have a Rr genotype. In a cross between two red/white feathered chicken (Rr), the following offsprings will be produced RR, Rr, Rr and rr

RR- Homozygous red feather d chicken (1/4 × 100=25%)

Rr- Hybrid Red/White feathered chicken (2/4 × 100=50%)

rr- Homozygous white feathered chicken (1/4 × 100=25%)

8 0
3 years ago
What are the differences between cells and viruses
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Cells<span> are the basic units of life. </span>Cells<span> can exist by themselves, like bacteria, or as part of a larger organism, like our </span>cells<span>. </span>Viruses<span> are non-living infectious particles, much smaller than a </span>cell, and need a living host to reproduce. The genetic material of thecell<span> is DNA, a double stranded helix.</span>
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If glossopteris fossils were found in Antarctica what was the climate of this continent before
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Tropical Climate

Explanation:

If glossopteris fossils were found in Antarctica, the climate of this continent before was a Tropical Climate.

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