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Centromeres are chromosomal regions that mediate kinetochore assembly and spindle attachment during cell division.

If a woman is colorblind, that means she has the nonworking gene on both X chromosomes. Since sons almost always get their only X chromosome from their mom, chances are they will be colorblind too

Arteries carry blood away from the heart and veins carry blood back to the heart. Arteries transport blood away from the heart and branch into smaller vessels, forming arterioles. Arterioles distribute blood to capillary beds, the sites of exchange with the body tissues. Capillaries lead back to small vessels known as venules that flow into the larger veins and eventually back to the heart.

Rainforest trees are quite different from trees of temperate forests. In the rainforest, trees grow to gigantic size, supported by strong, strut-like buttresses at the base of the trunk that help to stabilize them in shallow forest soils. Huge creepers twine themselves around the trunks of trees.

Specifically, meiosis creates new combinations of genetic material in each of the four daughter cells. These new combinations result from the exchange of DNA between paired chromosomes. Such exchange means that the gametes produced through meiosis exhibit an amazing range of genetic variation.

AS and AS should not marry, there is every chance of having a child with SS. AS and SS AA marries an AS. You'll end up with kids with AA and AS which is good.

Wind direction is usually measured using a wind vane.

Bread mold is saprophytic, as are most types of fungi. An organism that is saprophytic is one that feeds off of dead or decaying.

As photosynthetic organisms, plants take up atmospheric CO2, chemically reducing the carbon. This represents not only an acquisition of stored chemical energy for the plant, but also provides the carbon skeletons for the organic molecules that make up a plants' structure.

Tail wagging, bright colors, mouth gaping/display, inflation, body posture, head bobs and 'push-ups' (some animals are capable of changing color to attract mates) are some displays that allow lizards to send signals to translate to a potential mate

The final product of carbohydrate digestion is primarily glucose along with some fructose, glucose, and galactose, while amino acids are the end products of protein digestion

Phenotype refers to an individual's observable traits, such as height, eye color and blood type. A person's phenotype is determined by both their genomic makeup (genotype) and environmental factors.

The limbs of crocodiles, birds, whales, horses, bats and humans all look very different they share the same five fingered bone structure. This provides evidence for the theory of evolution .

Congenital hypothyroidism, previously known as cretinism, is a severe deficiency of thyroid hormone in newborns. It causes impaired neurological function, stunted growth, and physical deformities

Petaloid sepals, which are sepals that resemble and function like petals, primarily attract pollinators. These modified sepals are often colourful and take on the role of petals in attracting insects, birds, or other animals that facilitate pollination.