All categories

3 years ago

the location of a blood source viewed in three mis as determined by projecting angleso part of individual bloodstains

Biology

1 answer:

Andru [333]3 years ago

8 0

Answer:

the direction of blood droplets can be determined from the shape of that it formed when they hit the flat surface. the tail of the elongated drop points to the travel Direction.this droplet was traveling from bottom left and upper right the victim may be somewhere in the lower left.

Explanation:

You might be interested in

As the best-adapted members of a species produce offspring and pass on their favorable characteristics to succeeding generations

Serggg [28]

Answer:

The entire population will gradually become more similar to the best-adapted members.

Explanation:

Natural selection will cause the best-adapted members to have a better chance of survival and repopulation.

8 0

3 years ago

Which consist of sperm cells and egg cells? gametes tetrads diploids chromosomes

Alex787 [66]

The mammalian sperm cell consists of a head, a midpiece and a tail. The head contains the nucleus with densely coiled chromatin fibres, surrounded anteriorly by an acrosome, which contains enzymes used for penetrating the female egg.

8 0

3 years ago

Read 2 more answers

Suppose that in unicorns, two autosomal loci interact to determine the type of tail. One locus controls whether a tail is presen

Nina [5.8K]

Explanation:

As you can see in the picture below, this is a dihybrid cross with a twist.

We can accomplish that mutually parentages are heterozygotes for both characters because the genotypes are

9 unicorns with curly tails (shown in green)

3 with straight tails (shown in red)

3 curly tales trait carriers with no tail (shown in dark blue)

1 straight tail trait carriers with no tail ( shown in light blue)

If this was an ordinary case of the dihybrid cross, we would get a 9:3:3:1 phenotype ratio.

However, since the first trait, the presence of the tail, is affecting the other trait, the trait texture, the ratio is altered.

$\frac{1}{4}$ of the offspring (genotypes tt C_ and tt SS) has no tail, therefore we cannot observe the texture of the tail (some of the tailless individuals have Curly alleles -blue squares marked with green, some of them have Straight alleles -blue square marked with red ).

Therefore, the altered ratio is $\frac{1}{2}$ curly tails, $\frac{1}{4}$ straight tales, $\frac{1}{4}$ tailless

6 0

3 years ago

Select all the potential effects of damming a river.

bonufazy [111]

The answer is; C & E

Building a dam alters the water regime down the dam. The dam also affects fish migration along the river, alters the transportation of sediments by the river downstream, and changes temperatures within the local environment of the dam. These changes, however, the subtle effect the ecosystem around the dam and down the river. The potential energy of the water held by the dam is, however, high and used to produce more electricity.

7 0

3 years ago

The water hyacinth is an invasive species that can spread extremely fast, blanketing a water surface in a very short period of t

Veseljchak [2.6K]

1Answer:

The correct answer is - D. how changes in biodiversity impact an ecosystem.

Explanation:

The water hyacinth is an invasive plant species that rapidly grows and creates a thick layer over the water surface in almost every aquatic ecosystem. The growth of the layer of this species causes problems to the environment, ecosystem, humans, and other species.

These aquatic plants reduce the oxygen level and other nutrients from the ecosystem it is introduced and affect the biodiversity by increasing heavy metals and contaminants.

The layer of this plant inhibits photosynthesis that decreases sugar and energy production and blocks the boat and ship movements and economically as well.

3 0

3 years ago

Read 2 more answers