Bacteria and fungi feed on a dead log.These organisms act as decomposers by breaking

In humans, black hair (B) is dominant over red hair (b) and having six fingers (F) is dominant over having five fingers (f). Sal

Lera25 [3.4K]

Answer:

Genotype & Phenotype

BbFf - 4

bbFf - 4

Bbff - 4

bbff- 4

Phenotype

BbFf – Black Hair with six fingers

bbFf – red hair with six fingers

Bbff – Black hair with five fingers

Bbff – red hair with five fingers

Explanation:

Given

Black hair allele is represented by "B"

Red hair allele is represented by "b"

Trait of having six fingers is represented by "F"

Trait of having five fingers is represented by "f"

Also , B is dominant over b and F is dominant over f

Genotype of sally having black hair and five fingers when her father has red hair is Bbff

Genotype fo Bill having red hair and six fingers when his mother had five fingers is bbFf

Bbff * bbFf

Bf bf Bf bf

bF BbFf bbFf BbFf bbFf

bf Bbff bbff Bbff bbff

bF BbFf bbFf BbFf bbFf

bf Bbff bbff Bbff bbff

Genotype & Phenotype

BbFf - 4

bbFf - 4

Bbff - 4

bbff- 4

Phenotype

BbFf – Black Hair with six fingers

bbFf – red hair with six fingers

Bbff – Black hair with five fingers

Bbff – red hair with five fingers

5 0

3 years ago

What happens to a cell cycle when cancer occurs?

omeli [17]

Answer:

Cancer is unchecked cell growth. Mutations in genes can cause cancer by accelerating cell division rates or inhibiting normal controls on the system, such as cell cycle arrest or programmed cell death. As a mass of cancerous cells grows, it can develop into a tumor.

4 0

2 years ago

Read 2 more answers

When the threshold of voltage-gated channels is reached and voltage-gated channels open, the resulting change in membrane potent

sveta [45]

Answer:

Action potential.

Explanation:

Action potential may be defined as the change of the membrane potential of the cell with response to the stimulus. The different ions enter and exit the cells.

Action potential generates in the cell when the threshold voltage - gated channel reaches and opens the voltage gate channel. The opening of voltage gated channel changes the membrane potential of the cell.

Thus, the correct answer is option (4).

5 0

3 years ago

Which of these examples describes a pioneer species that is starting primary succession? A. ferns growing at the base of trees i

quester [9]

Answer:

B. grass growing on a newly formed dune

Explanation:

The primary succession is a process that occurs on newly formed environments. In this case, we have a newly formed dune. The dune is consisted only of sand, and it has no vegetation on it. If a grass manages to grow on the dune, than it will be a pioneer species as there are no other species present, thus it will start the primary succession on the dune. As the grass spreads out, it will create more and more biomass, as well as releasing certain chemicals in the dune, thus starting to create a soil, which in turn will provide conditions for more species to move in and start the second succession.

3 0

3 years ago

Which category of organisms is least likely to be revised and why?

sasho [114]

In the taxonomic classification of the organism, the species are the categories, which have the most specific traits. In case, a organism is discovered, which has some characteristics similar to any species, then the new organism would be placed in the same genus, but the existing species would not be disturbed. So, the chances of changes in species is least as compared to genus, order, class, phylum and kingdom. So, the species is less likely to be revised.

4 0

3 years ago