3 years ago

How are babies made?

1 answer:

7 0

Answer:

The genetic material in the sperm combines with the genetic material in the egg to create a new cell that starts dividing rapidly. You're not actually pregnant until that bundle of new cells, known as the embryo, travels the rest of the way down the fallopian tube and attaches itself to the wall of your uterus.

Explanation:

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In angiosperm double fertilization, one sperm nucleus fertilizes the ______ to form the diploid ______, and a second sperm nucle

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one sperm fertilizes the egg cell, forming a diploid zygote

Explanation:

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3 years ago

3. In rabbits, spotted coat (S) is dominant to solid color (s) and black (B) is dominant to brown (b). These loci are unlinked.

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Answer:

Genotype: SsBb

Phenotype: Spotted, black

Explanation:

Homozygous, true-breeding brown spotted will have the genotype SSBB while a homozygous, true-breeding solid black rabbit will have the genotype ssbb.

Crossing the two to produce offsprin:

SSbb x ssBB = All SsBb

All the offspring will have SsBb genotype and since S and B are dominant over s and b respectively, the offsprings will appear black and spotted.

See the attached Punnet's square analysis.

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4 years ago

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3 years ago

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