How does sexual reproduction contribute to variation?

Answer 1

Ved, then goes to the nucleus to give the chromosomes. Alleles are the different types of genes that could be passed on. Some alleles are dominant over the recessive allele e.g. A brown eyed allele is dominant over the recessive blue eyed allele because brown is darker than blue. Homozygous means having two of the same allele e.g. If a Homozygous parent with a genotype of BB (brown) is crossed with another parent with the same allele then there is a 1:0 ratio of their offspring being homozygous brown eyed children. But if Homozygous parent with a genotype BB is crossed with a parent with a genotype bb (blue), then the ratio is 1:0 of the offspring being heterozygous brown eyed children, they will be brown eyed and not blue eyed because The brown eyed allele is dominant over the recessive blue eyed allele. When happens n.

Answer 2

Sexual reproduction involves the genetic material from two parents combining. This leads to new genetic combinations. The process of meiosis also creates a great variety of gametes by crossing-over. The random orientation of alleles during meiosis promotes variation as well.

Answer 3

The variation is created when the female egg 'merges' with the male sperm, and their DNA data is spliced into a single new set of data. Therefore the new data will be a mixture of two original sets, and also there is a possiblity of random gene mutation.

If you are interested in this topic I'd suggest reading 'The Selfish Gene' by Richard Dawkins.

Answer 4

With sexual reproduction two individuals contribute genetic material with traits generally being determined by the two alleles for each gene. The process of meosis which creates the gametes and recombination leads to an individual with a genetic makeup that differs from both parents. Over time that process allows the movements of alleles from one population to the next.

Answer 5

Technically, in three ways. During meiosis the chromosomes are independently orientated, So, you can get male-male, or male female orientation of chromatids. Then in prophase I there is crossing over a sections of one chromosome with another chromosome's section. Then there is radon fertilization of any male gamete meeting and fertilizing any female gamete.

Answer 6

Sexual reproduction involves genetic material from two parents combining during random fertilization, resulting in new genetic combinations. The process of meiosis creates a large variety of gametes as a result of crossing over during prophase 1 and the random orientation of alleles.

Answer 7

Sexual reproduction results in infinite possibilities of genetic variation. In other words, sexual reproduction results in offspring that are genetically unique. They differ from both parents and also from each other. This occurs for a number of reasons.

When homologous chromosomes form pairs during prophase I of meiosis I, crossing-over can occur. Crossing-over is the exchange of genetic material between homologous chromosomes. It results in new combinations of genes on each chromosome.

When cells divide during meiosis, homologous chromosomes are randomly distributed to daughter cells, and different chromosomes segregate independently of each other. This called is called independent assortment. It results in gametes that have unique combinations of chromosomes.

In sexual reproduction, two gametes unite to produce an offspring. But which two of the millions of possible gametes will it be? This is likely to be a matter of chance. It is obviously another source of genetic variation in offspring. This is known as random fertilization.

All of these mechanisms working together result in an amazing amount of potential variation. Each human couple, for example, has the potential to produce more than 64 trillion genetically unique children.

Answer 8

Sexual reproduction contributes to variation through the process of genetic recombination. During sexual reproduction, genetic material from two parent organisms combines to create a unique offspring with a mix of genetic traits. This genetic diversity leads to variation in traits among individuals within a population, allowing for better adaptation to changing environments.

Answer 9

Sexual reproduction produces variation because of the difference in genetic pools. Each non-related sexual partner has different genetic characteristics producing variation.