4. Which of the following are common to all of the

Viefleur [7K]

it is near the south pole.

3 0

3 years ago

Frank counts 56 maple trees living on a 20-acre tract of land, and the data allows him to calculate the of the maple trees on th

frozen [14]

Answer:

population density

population distribution

age structure

Explanation:

if we look at this question; it looks glaring that it correlates with a fill in the blank type of question.

So, from the question:

Frank counts 56 maple trees living on a 20-acre tract of land, and the data allows him to calculate the population density of the maple trees on the land.

In an ecological succession, population density refer to species of a common genera in specific geographical setting. It helps to measure the exact number of organism inhabitant a unit area of a place.

He observes that most of the maple trees grow closely together in groups of 6 to 8 trees, which describes the population distribution.

Population distribution is the spread of organism over a region in a geographic ecological setting. The pattern of distribution of organism may be uniform , in some organism they are largely dispersed and in some they are clumped together.

The age structure of the maple trees shows the percentages of trees of different ages.

The age structure is also a term used in ecology which is normally use to predict the proportion of growth of organisms. Age structure of species in the environment speaks volume about their distribution of age.

7 0

3 years ago

In rabbits, short hair is due to a dominant allele, S, and long hair to its recessive allele, s. Black hair is due to a dominant

Natali5045456 [20]

Answer:

SsBB x SsBB

or

SsBB x SsBb

Explanation:

SS- short hair

ss - long hair

BB- black hair

bb- white hair

Total the number of offspring produced = 2518+817=3335

Where 2518= short haired, black offspring SSBB or SsBb

817= Longed Hair, black offspring ssBB or ssBb

To get the offspring proportion for short hair black offspring

2518/3335×100 = 75.5%

long-haired, blackoffspring =817/3335×100 = 25%

This gives ratio of 3:1 as against the proposed dihybrid phenotypic ratio of Mendel experiment 9:3:3:1

Now, if you remember a dihybrid cross results in 9:3:3:1 phentoype ratio. That is when both parents are heterozygous for both alleles. So we can rule that out since it doesn't match our 3:1 ratio.

Since all the offspring are black , it means one parent is homozygous dominant for black and the other parent is either homozygous or heterozygous for the black allele.

Since the ratio is 3:1, for the hair length

That leaves us with the short hair. Since the ratio is 3:1, both parents are heterozygous for hair length.

Therefore, the possible parental genotype is

SsBB x SsBB

or

SsBB x SsBb

4 0

3 years ago

How was the cane toad introduced in Australia

never [62]

Answer: Option B)

Im 100% sure its the answer!

4 0

3 years ago

What type of cellular respiration does Cryptococcus undergo? aerobic or anaerobic?

dangina [55]

anaerobic and does not require oxygen

4 0

3 years ago