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Biology

1 answer:

Mama L [17]3 years ago

5 0

Answer:

Explanation:

Both parents are Pp, using a punnet square will shop that the top left would be PP, the top right is Pp, the bottom left is Pp and the bottom right would be pp.

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Suppose two BbCc mice are crossed together. Assuming that the two genes assort independently, what are the expected phenotypes,

Katyanochek1 [597]

Answer:

4 types of phenotypes with phenotypic ratio 9:3:3:1 will be obtained.

Explanation:

The Punnett square diagram for the cross between mice with genotype BbCc & BbCc is attached.

It is clear from the diagram attached that the phenotypic ratio will be 9:3:3:1

The following 9 genotypes will show dominant trait for both the characters i.e. characters represented by B & C genes.

BBCC, BBCc, BbCC, BbCc, BBCc, BbCc, BbCC, BbCc, BbCc

The following 3 genotypes will show dominant trait for one character represented by gene B and recessive trait for other character represented by gene C.

BBcc, Bbcc, Bbcc

The following 3 genotypes will show recessive trait for one character represented by gene B and dominant trait for other character represented by gene C.

bbCC, bbCc, bbCc

The following genotype is the only genotype which will show recessive trait for both the characters represented by gene B & C.

bbcc

6 0

3 years ago

Why do homologous chromosomes crossover during pro prophase l?

Reil [10]

Crossover occurs when two chromosomes, normally two homologous instances of the same chromosome, break and then reconnect but to the different end piece. If they break at the same place or locus in the sequence of base pairs, the result is an exchange of genes, called genetic recombination.

3 0

3 years ago

Choose all the answers that apply. Soil is made of ___ air, water, organic material, minerals, weathered rock

GrogVix [38]

Answer:

organic material, minerals, and weathered rock.

Explanation: air cant be mixed into soil and neither can water

6 0

3 years ago

How does time affect the weathering of rocks?

Gemiola [76]

Erosion can only occur over time.