A boy has one X chromosome from the mother and one Y chromosome from the father, making his chromosome pair for gender determination XY.
The sex chromosomes, X and Y, are not given a number. They determine an individual's sex and are not part of the standard numbered pairs of autosomes.
Chromosome pair 23 in humans is the pair of sex chromosomes. In females, both sex chromosomes are the X sex chromosome, and in human males one sex chromosome is the X and the other is the Y chromosome.
An allele is one member of a pair or series of genes that occupies a specific position on a specific chromosome. Each allele can encode a specific trait or characteristic. When two alleles are present in an individual, they can interact to determine the physical and physiological traits of that individual.
There are 46 chromosomes per cell, with 22 pairs and an XX pair for females or an XY pair for males.
because every chromosome must have a pair to survive
A boy has one X chromosome from the mother and one Y chromosome from the father, making his chromosome pair for gender determination XY.
translocation
They have half the number of the somatic (parent) cell. So if a parent cell had 46 chromosomes in its nucleus, then its gamete would have 23(one chromosome from each pair).
The sex chromosomes, X and Y, are not given a number. They determine an individual's sex and are not part of the standard numbered pairs of autosomes.
Diploid: adj. 1 Double or twofold. 2 Having a homologous pair of chromosomes for each characteristic except sex, the total number of chromosomes being twice that of a gamete.-n 1. a diploid cell. 2. An individual characterized by a diploid chromosome number.It has two copies of each chromosome.
Chromosome number 8. (Gene: RECQL4 gene.)
the answer is TRANSLOCATION.
Chromosome
cross over
in a homologous chromosome there are two chromosomes ( a chromosome and a sister chromosome)
An exchange of chromosome segments is called a translocation. In genetics, it refers to a chromosome abnormality caused by rearrangement of parts between nonhomologous chromosomes.