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Bas_tet [7]
2 years ago
11

Fertilization occurs when _____.

Biology
2 answers:
kicyunya [14]2 years ago
8 0
Two gametes come together and chromosomes combine
AleksandrR [38]2 years ago
5 0

Answer:

two gametes come together and chromosomes combine is the correct answer

Explanation:

Fertilization occurs when the haploid gametes are fused to form a zygote.

In human The male sperm fuse with female egg to give rise to a diploid cell inside the women's body in the Fallopian tube.

The sperm and egg have a half number of the chromosome, and they are haploid they have chromosomes (single set), and when they fuse to form a zygote,chromosome combine and Zygote has two sets(23pairs) of the chromosomes.

Thus fertilization is a process which occur when two gametes come together and chromosomes combine.

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Liono4ka [1.6K]

Answer:

If the two organisms are heterozygous for the dominant trait.

Explanation:

For every trait, a diploid organism receives two forms of gene called ALLELE, from each parent. Allele is the variant form of a gene.

According to Mendel's law of dominance, for a particular trait, an allele is capable of masking the expression of another allele in a gene. The expressed allele is called the DOMINANT allele while the masked allele is called the RECESSIVE allele. Due to this, an organism can express a dominant trait even in a combined or heterozygous state i.e. different alleles.

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