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storchak [24]
3 years ago
8

Suppose that two ancient types of plants, one that grows in the winter and one that grows in the summer, appear together in the

fossil record for two periods in the geologic time scale. In the fossil records from a third period in the geologic time scale, one of the plants is suddenly missing. Which of the following would best explain why one type of plant disappeared but the other did not?
Biology
2 answers:
makvit [3.9K]3 years ago
7 0
Whichever option is most closely related to Natural Selection keeping the warm weather plants due to better conditions.
NemiM [27]3 years ago
6 0

Answer:

pollution

volcanic eruption

hunting

climate change

Explanation:

those are the choices  ^

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3 years ago
A woman heterozygous for polydactyly (extra fingers and toes), a dominant trait, is married to a normal man. What is the probabi
Feliz [49]

Answer:

The correct answer is -50%

Explanation:

Polydactyly is a dominant trait where a person gets an extra finger or toes the dominant allele is represented by P = allele for polydactyly, and the recessive allele represented by p = normal allele

So, the heterozygous woman will be - Pp & the normal man will be - pp.  The presence of one allele of polydactyly will be able to show its effect as it is dominant.

Cross between heterozygous woman & normal man:

Gametes:

   P                              p

p Pp (Show polydactyly) pp (Normal phenotype)

p Pp (Show polydactyly) pp (Normal phenotype)

From the above Punnett square, the probability of an offspring that has extra fingers or toes will be 1/2 or 50%.

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