Filter by tags
Questions and Articles
79 items
how many chromosomes does an african pygmy hedgehog have?
A:
A relaxed Four-Toed Hedgehog (also known as the African Pygmy Hedgehog) has a generally oval shape. The limbs are short and the animal's round body is low to the ground.
... more
Why are acentric chromosomes genetically inactive?
A:
Acentric chromosomes are formed as a result of inversion of genes in one of the chromosomes in a homologous pair. This is a type of chromosomal aberration. Homologous loci are paired at meiosis. The meiotic anaphase will contain a chromatid connectin
... more
How do bacteria separate their two chromosomes during cell division?
A:
Prior to cell division, bacteria face a daunting task. They must separate their two copies of genetic material in space to ensure that each daughter cell contains a complete genome after cytokinesis This requirement is so important that many bacteria
... more
What are the sex chromosomes in human females and males?
A:
For humans XX is female and XY is male. These represent one set of chromosomes. Hence, the presence or absence of the Y chromosome determines sex. They are also different in size if you look at a karyotype (picture of all the chromosomes lined up tog
... more
What are consequences of XX females and XY males for traits on their sex chromosomes?
A:
• Note that unlike autosomes which come in homologous pairs during meiosis, the X and Y are not the same in size or the genes they contain. • None of the genes on the Y are essential for life. Females do quite well with two X chromosomes and no Y chr
... more
How many chromosomes does a male iguana have? And how many does a female horse have?
A:
Iguanas 2N = 34 (17 pairs, one of which is the sex chromosomes), horses 2N = 64 (32 pairs, one of which is the sex chromosomes.
... more
Do males have different chromosomes than females?
A:
Yes, they differ in a pair of chromosomes known as the sex chromosomes. Females have two X chromosomes in their cells, while males have one X and one Y chromosome. Inheriting too many or not enough copies of sex chromosomes can lead to serious proble
... more
What are chromosomes and what are there function?
A:
chromosomes are filamentous bodies which are typically present in the nucleus and which become visible during cell division,FUNCTION:They are the carriers of the genes or units of heredity.
... more
Sex chromosomes and male functions: where do new genes go?
A:
The position of a gene in the genome may have important consequences for its function. Therefore, when a new duplicate gene arises, its location may be critical in determining its fate. Our recent work in humans, mouse, and Drosophila provided a test
... more
What is this animal with odd chromosomes (male) and even chromosomes (female)?
A:
In several species of insects, the males may have an odd number of chromosomes because they are haploid. One extreme example is the ant, Myrmecia sp, in which the diploid females have 2 chromosomes, but the haploid males have only 1.
... more