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Murrr4er [49]
2 years ago
9

After a major environmental change, what happens to species that do not adapt or move?

Biology
2 answers:
icang [17]2 years ago
7 0

B. They become extinct

Please mark as brainliest if this helped!

monitta2 years ago
7 0

Answer: They become extinct.

Adaptation can be defined as the physiological, structural and behavioral changes that occur in an organism either plant or animals which supports it's survival in the unfavorable environment. These changes are the result of natural selection which suggests that nature selects those individuals which are fit for survival in drastic environmental conditions.

According to the given situation, after a major environmental change the species which are not adapted to the changing conditions they are likely to extinct because adaptation increases the chances of survival of the organisms.

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When a BB male and a Bb female are crossed, 50% BB and 50% Bb genotypes are produced and a 100% black phenotype.

The entire number of genes that an organism receives from its parents makes up its genotype. Alleles, which are pairs of these genes, are found. One gene is dominant and one gene is recessive in each allele.

The dominant gene is always expressed in a cross if it is present. Only when a pair of alleles is made up of two recessive genes does the recessive gene express itself. In this instance, the white fur is subordinate to the black fur. White fur is represented as b, while black fur is represented as B.

We can see that when we cross the BB male and Bb female, we will get a genotype that is 50% BB and 50% Bb, as well as a phenotype that is 100% black fur.

Parents: BB x Bb

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Offspring: BB, BB, Bb, Bb

The genotypic ratio = 1:1

The phenotypic ratio = 1:0

Genotype probabilities:

P(BB) = 2/4 = 0.5 or 50%

P(Bb) = 2/4 = 0.5 or 50%

Learn more about genotype here:

brainly.com/question/18101683

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