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Luda [366]
2 years ago
10

A group of students is walking in the park, and one of them takes a picture of a pollen grain that is being blown by the wind. W

hat caption can the student use for this picture?
Biology
2 answers:
postnew [5]2 years ago
6 0

Answer:

gene flow at work

ioda2 years ago
4 0

Answer:

Gene flow at work

Explanation:

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The levels of carbon dioxide are at the highest that they have ever been in history of the earths
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Answer:

false

Explanation:

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The features of the earth are influenced by multiple factors. for example, the ____ in a certain area is a product of elevation,
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B) climate

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saw5 [17]

Answer: The combination produced is RRtt.

The combination rrTt does not appear in this punnett square.

Explanation:

As the problem does not indicate more information, I assume that punnett square is made between two RRtt genotypes. It can produce gametes that have the alleles Rt. A gamete is a sexual cell (egg or sperm) that has only one allele of each gene. And, each gamete codes for a different gene. Since here we have two different types of alleles (R and t), it is a dihybrid cross.

<u>A Punnett square is a diagram used to predict the genotypes of a cross or breeding experiment.</u> It is used to determine the genotypes and phenotypes of the offspring. To do it, you have to label the rows with one parent's gametes and label the columns with the other parent's genotype. Then, have each box inherit letters from its row and column, and interpret the results.

Then, the punnett square (shown in the picture) will be between RRtt and RRtt whose gametes can only be Rt, so Rt x Rt will be made.

The result in an offspring which will be 100% RRtt, and there is no rrTt combination here because non of the parents have an r allele, then none of the children can inherit it.

To have an offspring where rrTt genotype is shown, a different genotype must be used, in which both parents must have at least one r allele and one t allele. For example, it could be Rrtt x rrTt.

5 0
3 years ago
PLEASE help!!
Lostsunrise [7]
Sedimentary because it is made of layers of sediment and fossils can easily get mixed in
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Which best describes how an iconic bond forms
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When an atom transfers/ gains a valence electron, it gains either a positive or negative charge. in the Proces, becoming an ion. because of the negative/positive charge the two ions are now attracted to each other.

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