Use evidence from grants research explain how natural selection leads to evolution

1 answer:

meriva2 years ago

8 0

The Grants had documented natural selection in action. While beak size is clearly related to feeding strategies, it is also related to reproduction. Female finches tend to mate with males that have the same size beaks. These factors together can add to the development of new species.

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Which of the following is not a part of all cells?

koban [17]

Its B.cell wall

ribosomes are used to synthesis proteins and other components required for cells

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the cell wall is only present in plants (cellulose) and fungi (chitin) and it helps plants to regulate their water intake physically

the cytoplasmis present in all cells as the medium which organelles are suspended in and in contact with

hope that helps <span />

4 0

3 years ago

Between a Black father bear (genotype BB) and a Brown mother bear (genotype bb), they had several baby bears.Black fur allele (B

Karolina [17]

Answer:

100% or 1

Explanation:

This question involves a gene coding for fur color in bears. According to the question, black fur allele (B) is dominant over the brown fur allele (b). This means that a bear heterozygous for fur color (Bb) will be phenotypically black.

In this question, a black father bear (genotype BB) and a brown mother bear (genotype bb) were crossed, the baby bears will all have a genotype Bb (see punnet square in the attached image). Since all the offsprings of this cross have genotype Bb, this means that 100% will have black fur.