All categories

4 years ago

Which description is common to both gymnosperms and angiosperms?

Biology

1 answer:

12345 [234]4 years ago

6 0

These gymnosperms soon became the dominant plants. The Mesozoic is sometimes called the Age of cycads.

But their success was only short-lived. During the mid to late Mesozoic, the first flowering plants or angiosperms appeared.

The mesozoic is <span>Triassic</span>

You might be interested in

What cellular process uses oxygen and sugar to produce energy?

erastovalidia [21]

Respiration, which is the opposite of photosynthesis

6 0

3 years ago

Chromosomal rearrangements are considered large-scale mutations. Point mutations are considered small-scale mutations, and are o

mario62 [17]

Answer:

Please find what occurs in the single nucleotide-pair substitution below

Explanation:

Single nucleotide-pair substitution is a type of point mutation as stated in this question. Point mutation is when one nucleotide base (single) is affected in the sequence. In this single nucleotide-pair substitution, ONE nucleotide base is substituted by another base.

For example, in a DNA sequence that reads: TAA GTC GGG, a mutated sequence affected by single nucleotide-pair substitution will read as follows: TAA GTC TGG. Note that in the last codon (GGG), a single nucleotide G has been replaced by another nucleotide T. Therefore, single nucleotide-pair substitution is said to have occur.

8 0

3 years ago

I need answers guys in biology billy bye genes

Maru [420]

Answer:

4: DNA is found in the nucleus of the cell

5: cell

6: A person has 23 pairs of chromosomes

7: Chromosomes, genes, DNA are different names for different parts of THE SAME thing

8: the genes that determine what you look like came from your PARENTS

9: the reproductive cells called SPERM AND EGGS each contain only 1/2 of the genes needed to make a person

10: All living things have the same genetic CODE

11: ATCG combine in different patterns to form different CHEMICALS

12: Each species has a different BLUEPRINT, but the same kind of DNA molecule

13: A(n) HORSE has 64 chromosomes

14: A chromosome can only be seen by using a MICROSCOPE

6 0

3 years ago

How a vaccine promotes immunity?<br>answer in your own words

anygoal [31]

Answer:

Because the vaccine is an antigen from living, weakened or killed microorganisms that activate the immune system and the body produces protective antibodies.

8 0

3 years ago

Which observation would be the best evidence for a recent founder event or population bottleneck?

Bingel [31]

The best evidence of such phenomena could be a population's genetic variation decrease.
When a population bottleneck occur it means that for some reason (i.e. environmental events) the size of a population is largely reduced. This leads to reduction of the genetic variation in that new smaller population. When a bottleneck occur, the founder effect is normally seen, which is that one population is established by a small group of a previously larger population leading once again the genetic variation, now though with a bigger population, to be very reduced.

7 0

3 years ago