please help me with these questions exchange genetic materia

please help me with these questions.

exchange genetic material between homologous chromosomes that takes 00.00 place during prophase of meiosis snes crossng over F Flag queston called chiasmata This preess results in the recombination of genetic matenal between nonsister chromatids cell divisions of germ c that result n the formation of gametes Meiosis consists of two rounds of division Choose I and Meiosis single round of chromosome rep the gametes -when an individual has two the X chromosomes chromosomes a but one are turned ott because they turn into inactive Ba be seen both sexes but the express ditlers between he seres eating pattern of cel growth a ase the penod between d Mision Inter phi

Solution

-exchange of genetic material between chromosomes that take place in prophase of meiosis I at sites called chiasmata. The process results in the recombination of genetic material between nonsister chromatids.- CHROMOSOMAL CROSSOVER OR CROSSING OVER.

Explanation- More specifically it occurs in the pachytene stage of MeiosisI during a process called Synapsis.Chromosomal crossover occurs usually when matching regions on matching chromosomes break and then reconnect to the other chromosome.

-cell division of germ cells that result in the formation of gametes. -MEIOSIS

Explanation- Meiosis halves the chromosome number in the gametes so that when fertilisation happens, the normal diploid number is restored. It also has a key role introducing genetic variation into gametes and so into the offspring of sexually reproducing organisms.

-when an individual has two or more X chromosomes, all of the X chromosomes but one are turned off because they turn into inactive barr bodies- X-INACTIVATION OR LYONIZATION

Explanation- It is the condition in which all X chromosomes of the cells in excess of one are inactivated on a random basis and form transcriptionally inactive structure called heterochromatin.

-can be seen in both sexes but its expression differs in different sexes- SEX-LIMITED GENES

Explanation-Sex-limited genes are genes that are present in both the sexes of sexually reproducing species but are expressed in only one sex and remain \'turned off\' in the other. They cause the two sexes to show different traits or phenotypes, instead having the same genotype.

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