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dem82 [27]
3 years ago
15

The theory of evolution by natural selection was proposed in the origin of species by means of natural selection (1859) written

by
Biology
1 answer:
sp2606 [1]3 years ago
5 0
It was proposed by a scientist named Charles Darwin.
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What must happen for scientific theories to be accepted as valid? (5 points)
natka813 [3]

Answer:

scientific theories must be tested by more than one individual multiply times for it to become scientific law

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2 years ago
How to tell the difference between a male and female cat?
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List the five steps of a lytic viral replication cycle in order
OLEGan [10]
1. Virus attaches to the bacterium

2. Virus injects into the bacterium

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What separates rabbits/primate from the crocodiles on this cladogram?
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eggs with shells

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3 years ago
In Guinea pigs, short hair (S) is dominant over long hair (s), and black coat color (B) is dominant over
Scorpion4ik [409]

Answer:

Explanation:

Short hair (S) is dominant over long hair (s), and black coat color (B) is dominant over albino (b).

A female of a true breeding line with a black coat and long  hair is mated with a short haired albino male (also from a true breeding line)

parents genotype      BBss  x    SSbb

gametes                       Bs     x    Sb

F1 generation geenotype    BbSs

Phenotype- They are all with black coat and short hair

Mating of F1   BbSs  x  BbSs

   Percentage of offspring homozygous for both characters:

  Bb  x   Bb           Ss   x   Ss

 BB Bb Bb bb     SS  Ss Ss ss

 1/4             1/4         1/4       1/4

1/4*1/4 = 1/16 = 0.0625 = 6% for each homozygous characters (BBSS-6% and bbss-6%)

The genotypes of the homozygotes are BBSS and bbss

The phenotype of BBSS is black coat with long hair

The phenotype of bbss is an albino with short hair

5 0
3 years ago
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